title: SingleChildScrollView is not working anywhere
body: <p>To fix the <code>Bottom Overflow</code> error, I'm trying to make use of the <code>SingleChildScrollView</code> widget. I'm tried wrapping it to the <code>Column</code>, as well as <code>Scaffold</code> but getting lot for errors.</p>
  <p>Below is the error causing code:</p>
  <pre><code>
  class SignUp extends StatefulWidget {
  
    @override
    _SignUpState createState() =&gt; _SignUpState();
  }
  
  class _SignUpState extends State&lt;SignUp&gt; {
    final formKey = GlobalKey&lt;FormState&gt;();
  
    final TextEditingController nameController = TextEditingController();
    final TextEditingController emailController = TextEditingController();
    final TextEditingController passwordController = TextEditingController();
  
    final nameNode = FocusNode();
    final emailNode = FocusNode();
    final passwordNode = FocusNode();
  
    bool isLoading = false;
  
    @override
    void initState() {
      super.initState();
    }
  
    @override
    void dispose() {
      nameController.dispose();
      emailController.dispose();
      passwordController.dispose();
      nameNode.dispose();
      emailNode.dispose();
      passwordNode.dispose();
      super.dispose();
    }
  
    @override
    Widget build(BuildContext context) {
      final isKeyboard = MediaQuery.of(context).viewInsets.bottom != 0;
  
      final appBar = AppBar(
        iconTheme: Theme.of(context).iconTheme,
        backgroundColor: Colors.transparent,
        leading: CustomBackButton(
          onPressed: () =&gt; print('Back Button Tapped'),
        ),
      );
  
      // ***** Checking for current Theme Mode *****
      var brightness = Theme.of(context).brightness;
      bool darkModeOn = brightness == Brightness.dark;
  
      return KeyboardDismisser(
        gestures: [
          GestureType.onTap,
          GestureType.onVerticalDragDown,
        ],
        child: Scaffold(
          resizeToAvoidBottomInset: false,
          appBar: isLoading ? null : appBar,
          body: SafeArea(
            child: Form(
              key: formKey,
              child: AutofillGroup(
                child: Center(
                  child: SingleChildScrollView(
                    child: Padding(
                      padding: EdgeInsets.symmetric(horizontal: 5.w),
                      child: Column(
                        children: [
                          SizedBox(height: 2.h),
                          if (!isKeyboard) BuildHeader(title: 'Welcome Onboard'),
                          if (!isKeyboard) SizedBox(height: 2.5.h),
                          BuildNameField(nameController: nameController, nameNode: nameNode, emailNode: emailNode),
                          SizedBox(height: 2.5.h),
                          BuildEmailField(emailController: emailController, emailNode: emailNode, passwordNode: passwordNode),
                          SizedBox(height: 2.5.h),
                          BuildPasswordField(passwordController: passwordController, passwordNode: passwordNode),
                          SizedBox(height: 2.5.h),
                          buildEmailSignUpButton(),
                          SizedBox(height: 2.h),
                          BuildAccountExistsButton(),
                          Spacer(),
                          BuildDividerRow(darkModeOn: darkModeOn),
                          Spacer(),
                          buildGoogleSignUpButton(darkModeOn),
                          SizedBox(height: 3.h),
                          buildAppleSignUpButton(darkModeOn),
                          Spacer(),
                          BuildFooter(),
                        ],
                      ),
                    ),
                  ),
                ),
              ),
            ),
          ),
        ),
      );
    }
  
  </code></pre>
  <p>I'm getting the following errors, I had to truncate a lot of errors as it was over the allowed limit:</p>
  <pre><code>======== Exception caught by rendering library =====================================================
  The following assertion was thrown during performLayout():
  RenderFlex children have non-zero flex but incoming height constraints are unbounded.
  
  When a column is in a parent that does not provide a finite height constraint, for example if it is in a vertical scrollable, it will try to shrink-wrap its children along the vertical axis. Setting a flex on a child (e.g. using Expanded) indicates that the child is to expand to fill the remaining space in the vertical direction.
  These two directives are mutually exclusive. If a parent is to shrink-wrap its child, the child cannot simultaneously expand to fit its parent.
  
  Consider setting mainAxisSize to MainAxisSize.min and using FlexFit.loose fits for the flexible children (using Flexible rather than Expanded). This will allow the flexible children to size themselves to less than the infinite remaining space they would otherwise be forced to take, and then will cause the RenderFlex to shrink-wrap the children rather than expanding to fit the maximum constraints provided by the parent.
  
  If this message did not help you determine the problem, consider using debugDumpRenderTree():
    https://flutter.dev/debugging/#rendering-layer
    http://api.flutter.dev/flutter/rendering/debugDumpRenderTree.html
  The affected RenderFlex is: RenderFlex#6b876 relayoutBoundary=up14 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
    needs compositing
    parentData: offset=Offset(20.6, 0.0) (can use size)
    constraints: BoxConstraints(0.0&lt;=w&lt;=370.3, 0.0&lt;=h&lt;=Infinity)
    size: MISSING
    direction: vertical
    mainAxisAlignment: start
    mainAxisSize: max
    crossAxisAlignment: center
    verticalDirection: down
  ...  child 1: RenderConstrainedBox#b86cb NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...    parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...    constraints: MISSING
  ...    size: MISSING
  ...    additionalConstraints: BoxConstraints(0.0&lt;=w&lt;=Infinity, h=13.7)
  ...  child 2: RenderPositionedBox#4f180 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...    parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...    constraints: MISSING
  ...    size: MISSING
  ...    alignment: Alignment.centerLeft
  ...    textDirection: ltr
  ...    widthFactor: expand
  ...    heightFactor: expand
  ...    child: RenderParagraph#eb54e NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...      parentData: offset=Offset(0.0, 0.0)
  ...      constraints: MISSING
  ...      size: MISSING
  ...      textAlign: start
  ...      textDirection: ltr
  ...      softWrap: wrapping at box width
  ...      overflow: clip
  ...      locale: en_US
  ...      maxLines: unlimited
  ...      text: TextSpan
  ...        debugLabel: (((englishLike display1 2014).merge(blackMountainView headline4)).copyWith).copyWith
  ...        inherit: false
  ...        color: Color(0x8a000000)
  ...        family: Roboto_700
  ...        familyFallback: Roboto
  ...        size: 27.4
  ...        weight: 700
  ...        baseline: alphabetic
  ...        decoration: TextDecoration.none
  ...        &quot;Welcome Onboard&quot;
  ...  child 3: RenderConstrainedBox#20957 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...    parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...    constraints: MISSING
  ...    size: MISSING
  ...    additionalConstraints: BoxConstraints(0.0&lt;=w&lt;=Infinity, h=17.1)
  ...  child 4: RenderConstrainedBox#dede6 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...    needs compositing
  ...    parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...    constraints: MISSING
  ...    size: MISSING
  ...    additionalConstraints: BoxConstraints(w=370.3, 0.0&lt;=h&lt;=Infinity)
  ...    child: RenderMouseRegion#22641 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...      needs compositing
  ...      parentData: &lt;none&gt;
  ...      constraints: MISSING
  ...      size: MISSING
  ...      listeners: enter, exit
  ...      cursor: SystemMouseCursor(text)
  ...      child: RenderIgnorePointer#749a8 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...        needs compositing
  ...        parentData: &lt;none&gt;
  ...        constraints: MISSING
  ...        size: MISSING
  ...        ignoring: false
  ...        ignoringSemantics: implicitly false
  ...        child: RenderSemanticsAnnotations#40667 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...          needs compositing
  ...          parentData: &lt;none&gt;
  ...          constraints: MISSING
  ...          size: MISSING
  ...  child 5: RenderConstrainedBox#67979 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...    parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...    constraints: MISSING
  ...    size: MISSING
  ...    additionalConstraints: BoxConstraints(0.0&lt;=w&lt;=Infinity, h=17.1)
  ...  child 6: RenderConstrainedBox#97d0d NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...    needs compositing
  ...    parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...    constraints: MISSING
  ...    size: MISSING
  ...    additionalConstraints: BoxConstraints(w=370.3, 0.0&lt;=h&lt;=Infinity)
  ...    child: RenderMouseRegion#7eeba NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...      needs compositing
  ...      parentData: &lt;none&gt;
  ...      constraints: MISSING
  ...      size: MISSING
  ...      listeners: enter, exit
  ...      cursor: SystemMouseCursor(text)
  ...      child: RenderIgnorePointer#01dea NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...        needs compositing
  ...        parentData: &lt;none&gt;
  ...        constraints: MISSING
  ...        size: MISSING
  ...        ignoring: false
  ...        ignoringSemantics: implicitly false
  ...        child: RenderSemanticsAnnotations#e03be NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...          needs compositing
  ...          parentData: &lt;none&gt;
  ...          constraints: MISSING
  ...          size: MISSING
  ...  child 7: RenderConstrainedBox#a5e4d NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...    parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...    constraints: MISSING
  ...    size: MISSING
  ...    additionalConstraints: BoxConstraints(0.0&lt;=w&lt;=Infinity, h=17.1)
  ...  child 8: RenderConstrainedBox#2f682 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...    needs compositing
  ...    parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...    constraints: MISSING
  ...    size: MISSING
  ...    additionalConstraints: BoxConstraints(w=370.3, 0.0&lt;=h&lt;=Infinity)
  ...    child: RenderMouseRegion#bcb98 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...      needs compositing
  ...      parentData: &lt;none&gt;
  ...      constraints: MISSING
  ...      size: MISSING
  ...      listeners: enter, exit
  ...      cursor: SystemMouseCursor(text)
  ...      child: RenderIgnorePointer#f66bd NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...        needs compositing
  ...        parentData: &lt;none&gt;
  ...        constraints: MISSING
  ...        size: MISSING
  ...        ignoring: false
  ...        ignoringSemantics: implicitly false
  ...        child: RenderSemanticsAnnotations#7e929 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...          needs compositing
  ...          parentData: &lt;none&gt;
  ...          constraints: MISSING
  ...          size: MISSING
  ...  child 9: RenderConstrainedBox#1714f NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...    parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...    constraints: MISSING
  ...    size: MISSING
  ...    additionalConstraints: BoxConstraints(0.0&lt;=w&lt;=Infinity, h=17.1)
  ...    child 1: RenderConstrainedBox#3498e NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...      parentData: offset=Offset(0.0, 0.0); flex=1; fit=FlexFit.tight
  ...      constraints: MISSING
  ...      size: MISSING
  ...      additionalConstraints: BoxConstraints(0.0&lt;=w&lt;=Infinity, h=0.0)
  ...      child: RenderPositionedBox#1b64a NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...        parentData: &lt;none&gt;
  ...        constraints: MISSING
  ...        size: MISSING
  ...        alignment: Alignment.center
  ...        textDirection: ltr
  ...        widthFactor: expand
  ...        heightFactor: expand
  ...        child: RenderPadding#eb6fd NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...          parentData: offset=Offset(0.0, 0.0)
  ...          constraints: MISSING
  ...          size: MISSING
  ...          padding: EdgeInsets.zero
  ...          textDirection: ltr
  ...    child 2: RenderConstrainedBox#eb389 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...      parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...      constraints: MISSING
  ...      size: MISSING
  ...      additionalConstraints: BoxConstraints(w=20.6, 0.0&lt;=h&lt;=Infinity)
  ...    child 3: RenderParagraph#93a61 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...      parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...      constraints: MISSING
  ...      size: MISSING
  ...      textAlign: start
  ...      textDirection: ltr
  ...      softWrap: wrapping at box width
  ...      overflow: clip
  ...      locale: en_US
  ...      maxLines: unlimited
  ...      text: TextSpan
  ...        debugLabel: ((englishLike body1 2014).merge(blackMountainView bodyText2)).merge(unknown)
  ...        inherit: false
  ...        color: Color(0xdd000000)
  ...        family: Roboto
  ...        size: 16.5
  ...        weight: 500
  ...        baseline: alphabetic
  ...        decoration: TextDecoration.none
  ...        &quot;OR&quot;
  ...    child 4: RenderConstrainedBox#50550 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...      parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...      constraints: MISSING
  ...      size: MISSING
  ...      additionalConstraints: BoxConstraints(w=20.6, 0.0&lt;=h&lt;=Infinity)
  ...    child 5: RenderConstrainedBox#2a7e1 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...      parentData: offset=Offset(0.0, 0.0); flex=1; fit=FlexFit.tight
  ...      constraints: MISSING
  ...      size: MISSING
  ...      additionalConstraints: BoxConstraints(0.0&lt;=w&lt;=Infinity, h=0.0)
  ...      child: RenderPositionedBox#0e343 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...        parentData: &lt;none&gt;
  ...        constraints: MISSING
  ...        size: MISSING
  ...        alignment: Alignment.center
  ...        textDirection: ltr
  ...        widthFactor: expand
  ...        heightFactor: expand
  ...        child: RenderPadding#afb85 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...          parentData: offset=Offset(0.0, 0.0)
  ...          constraints: MISSING
  ...          size: MISSING
  ...          padding: EdgeInsets.zero
  ...          textDirection: ltr
  ...  child 15: RenderConstrainedBox#451dd NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...    parentData: offset=Offset(0.0, 0.0); flex=1; fit=FlexFit.tight
  ...    constraints: MISSING
  ...    size: MISSING
  ...    additionalConstraints: BoxConstraints(w=0.0, h=0.0)
  ...    child 1: RenderParagraph#19d0c NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...      parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...      constraints: MISSING
  ...      size: MISSING
  ...      textAlign: center
  ...      textDirection: ltr
  ...      softWrap: wrapping at box width
  ...      overflow: clip
  ...      locale: en_US
  ...      maxLines: unlimited
  ...      text: TextSpan
  ...        debugLabel: ((englishLike body1 2014).merge(blackMountainView bodyText2)).merge(unknown)
  ...        inherit: false
  ...        color: Color(0xbf000000)
  ...        family: Roboto
  ...        size: 13.7
  ...        weight: 400
  ...        baseline: alphabetic
  ...        decoration: TextDecoration.none
  ...        &quot;By using Netwersity you agree to it's&quot;
  ...    child 2: RenderConstrainedBox#e36ee NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...      parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...      constraints: MISSING
  ...      size: MISSING
  ...      additionalConstraints: BoxConstraints(0.0&lt;=w&lt;=Infinity, h=3.4)
  ...    child 3: RenderFlex#ffd54 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...      parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...      constraints: MISSING
  ...      size: MISSING
  ...      direction: horizontal
  ...      mainAxisAlignment: center
  ...      mainAxisSize: max
  ...      crossAxisAlignment: center
  ...      textDirection: ltr
  ...      verticalDirection: down
  ...      child 1: RenderSemanticsGestureHandler#bd90f NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...        parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...        constraints: MISSING
  ...        size: MISSING
  ...        behavior: deferToChild
  ...        gestures: tap
  ...        child: RenderPointerListener#43b96 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...          parentData: &lt;none&gt;
  ...          constraints: MISSING
  ...          size: MISSING
  ...          behavior: deferToChild
  ...          listeners: down
  ...      child 2: RenderConstrainedBox#a0757 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...        parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...        constraints: MISSING
  ...        size: MISSING
  ...        additionalConstraints: BoxConstraints(w=4.1, 0.0&lt;=h&lt;=Infinity)
  ...      child 3: RenderParagraph#55e37 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...        parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...        constraints: MISSING
  ...        size: MISSING
  ...        textAlign: center
  ...        textDirection: ltr
  ...        softWrap: wrapping at box width
  ...        overflow: clip
  ...        locale: en_US
  ...        maxLines: unlimited
  ...        text: TextSpan
  ...          debugLabel: ((englishLike body1 2014).merge(blackMountainView bodyText2)).merge(unknown)
  ...          inherit: false
  ...          color: Color(0xbf000000)
  ...          family: Roboto
  ...          size: 13.7
  ...          weight: 400
  ...          baseline: alphabetic
  ...          decoration: TextDecoration.none
  ...          &quot;and&quot;
  ...      child 4: RenderConstrainedBox#fac5c NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...        parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...        constraints: MISSING
  ...        size: MISSING
  ...        additionalConstraints: BoxConstraints(w=4.1, 0.0&lt;=h&lt;=Infinity)
  ...      child 5: RenderSemanticsGestureHandler#52395 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...        parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...        constraints: MISSING
  ...        size: MISSING
  ...        behavior: deferToChild
  ...        gestures: tap
  ...        child: RenderPointerListener#92253 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...          parentData: &lt;none&gt;
  ...          constraints: MISSING
  ...          size: MISSING
  ...          behavior: deferToChild
  ...          listeners: down
  ...    child 4: RenderConstrainedBox#b1d09 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...      parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...      constraints: MISSING
  ...      size: MISSING
  ...      additionalConstraints: BoxConstraints(0.0&lt;=w&lt;=Infinity, h=13.7)
  The creator information is set to: Column ← Padding ← _SingleChildViewport ← IgnorePointer-[GlobalKey#13af8] ← Semantics ← Listener ← _GestureSemantics ← RawGestureDetector-[LabeledGlobalKey&lt;RawGestureDetectorState&gt;#94304] ← Listener ← _ScrollableScope ← _ScrollSemantics-[GlobalKey#6bebf] ← RepaintBoundary ← ⋯
  The nearest ancestor providing an unbounded width constraint is: _RenderSingleChildViewport#cf013 relayoutBoundary=up12 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...  needs compositing
  ...  parentData: &lt;none&gt; (can use size)
  ...  constraints: BoxConstraints(0.0&lt;=w&lt;=411.4, 0.0&lt;=h&lt;=603.4)
  ...  size: MISSING
  
  See also: https://flutter.dev/layout/
  
  If none of the above helps enough to fix this problem, please don't hesitate to file a bug:
    https://github.com/flutter/flutter/issues/new?template=2_bug.md
  The relevant error-causing widget was: 
    Column file:///Users/sas/Projects/Development/App/Flutter/my_app/lib/screens/sign_up.dart:81:28
  When the exception was thrown, this was the stack: 
  #0      RenderFlex.performLayout.&lt;anonymous closure&gt; (package:flutter/src/rendering/flex.dart:926:9)
  #1      RenderFlex.performLayout (package:flutter/src/rendering/flex.dart:929:6)
  #2      RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
  #3      RenderPadding.performLayout (package:flutter/src/rendering/shifted_box.dart:233:12)
  #4      RenderObject.layout (package:flutter/src/rendering/object.dart:1779:7)
  ...
  The following RenderObject was being processed when the exception was fired: RenderFlex#6b876 relayoutBoundary=up14 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...  needs compositing
  ...  parentData: offset=Offset(20.6, 0.0) (can use size)
  ...  constraints: BoxConstraints(0.0&lt;=w&lt;=370.3, 0.0&lt;=h&lt;=Infinity)
  ...  size: MISSING
  ...  direction: vertical
  ...  mainAxisAlignment: start
  ...  mainAxisSize: max
  ...  crossAxisAlignment: center
  ...  verticalDirection: down
  RenderObject: RenderFlex#6b876 relayoutBoundary=up14 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
    needs compositing
    parentData: offset=Offset(20.6, 0.0) (can use size)
    constraints: BoxConstraints(0.0&lt;=w&lt;=370.3, 0.0&lt;=h&lt;=Infinity)
    size: MISSING
    direction: vertical
    mainAxisAlignment: start
    mainAxisSize: max
    crossAxisAlignment: center
    verticalDirection: down
  ...  child 1: RenderConstrainedBox#b86cb NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...    parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...    constraints: MISSING
  ...    size: MISSING
  ...    additionalConstraints: BoxConstraints(0.0&lt;=w&lt;=Infinity, h=13.7)
  ...  child 2: RenderPositionedBox#4f180 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...    parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...    constraints: MISSING
  ...    size: MISSING
  ...    alignment: Alignment.centerLeft
  ...    textDirection: ltr
  ...    widthFactor: expand
  ...    heightFactor: expand
  ...    child: RenderParagraph#eb54e NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...      parentData: offset=Offset(0.0, 0.0)
  ...      constraints: MISSING
  ...      size: MISSING
  ...      textAlign: start
  ...      textDirection: ltr
  ...      softWrap: wrapping at box width
  ...      overflow: clip
  ...      locale: en_US
  ...      maxLines: unlimited
  ...      text: TextSpan
  ...        debugLabel: (((englishLike display1 2014).merge(blackMountainView headline4)).copyWith).copyWith
  ...        inherit: false
  ...        color: Color(0x8a000000)
  ...        family: Roboto_700
  ...        familyFallback: Roboto
  ...        size: 27.4
  ...        weight: 700
  ...        baseline: alphabetic
  ...        decoration: TextDecoration.none
  ...        &quot;Welcome Onboard&quot;
  ...  child 3: RenderConstrainedBox#20957 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...    parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...    constraints: MISSING
  ...    size: MISSING
  ...    additionalConstraints: BoxConstraints(0.0&lt;=w&lt;=Infinity, h=17.1)
  ...  child 4: RenderConstrainedBox#dede6 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...    needs compositing
  ...    parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...    constraints: MISSING
  ...    size: MISSING
  ...    additionalConstraints: BoxConstraints(w=370.3, 0.0&lt;=h&lt;=Infinity)
  ...    child: RenderMouseRegion#22641 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...      needs compositing
  ...      parentData: &lt;none&gt;
  ...      constraints: MISSING
  ...      size: MISSING
  ...      listeners: enter, exit
  ...      cursor: SystemMouseCursor(text)
  ...      child: RenderIgnorePointer#749a8 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...        needs compositing
  ...        parentData: &lt;none&gt;
  ...        constraints: MISSING
  ...        size: MISSING
  ...        ignoring: false
  ...        ignoringSemantics: implicitly false
  ...        child: RenderSemanticsAnnotations#40667 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...          needs compositing
  ...          parentData: &lt;none&gt;
  ...          constraints: MISSING
  ...          size: MISSING
  ...  child 5: RenderConstrainedBox#67979 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  ...    parentData: offset=Offset(0.0, 0.0); flex=null; fit=null
  ...    constraints: MISSING
  ...    size: MISSING
  ...    additionalConstraints: BoxConstraints(0.0&lt;=w&lt;=Infinity, h=17.1)
  
  ======== Exception caught by rendering library =====================================================
  RenderBox was not laid out: RenderPadding#79c8b relayoutBoundary=up13 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  'package:flutter/src/rendering/box.dart':
  Failed assertion: line 1930 pos 12: 'hasSize'
  The relevant error-causing widget was: 
    SingleChildScrollView file:///Users/sas/Projects/Development/App/Flutter/my_app/lib/screens/sign_up.dart:78:24
  ====================================================================================================
  .
  .
  .
  ======== Exception caught by rendering library =====================================================
  RenderBox was not laid out: _RenderSingleChildViewport#cf013 relayoutBoundary=up12 NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE
  'package:flutter/src/rendering/box.dart':
  Failed assertion: line 1930 pos 12: 'hasSize'
  The relevant error-causing widget was: 
    SingleChildScrollView file:///Users/sas/Projects/Development/App/Flutter/my_app/lib/screens/sign_up.dart:78:24
  ====================================================================================================
  </code></pre>