Answers.Body: <p>I ended up uploading the files to my own hosting environment where I updated it to the latest version of Craft and plugins etc. Then pulled down locally and it worked fine. </p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-05-29T16:23:47.843Z
Answers.Text: I ran into something similar with a plugin called Neo. Instead of putting stuff up on a hosting environment, for local development, I just had to run "composer update" in my VM to get the latest in case anyone else runs into this issue.
Answers.UserDisplayName: Rob Erskine
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-02-29T09:44:56.703Z
Answers.LastActivityDate: 2020-02-29T09:44:56.703Z
Answers.UserDisplayName: mmc501
Answers.Body: <p>I ran into a similar issue with a local site I was trying to revert from v3.6 to match an import of the production site database which is still at v3.5. I tracked the error to a function that appeared to be calling a cached version of a plugin model. I resolved it by running the console command to flush all caches.</p>
  <pre><code>./craft clear-caches/all
  </code></pre>
  <p><a href="https://craftcms.com/docs/3.x/console-commands.html#clear-caches" rel="nofollow noreferrer">https://craftcms.com/docs/3.x/console-commands.html#clear-caches</a></p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2021-05-19T16:01:43.887Z
Answers.LastActivityDate: 2021-05-19T16:01:43.887Z
Answers.UserDisplayName: Bill Bushee
Body: <p>I am taking over a Craft website for a client. It is currently working fine on the hosting environment. </p>
  
  <p>I have pulled the website down locally from the hosting environment - the exact same files and database. It loads fine on the front end but when i try to login to the CMS I get the following error:</p>
  
  <pre><code>Unknown Property – yii\base\UnknownPropertyException
  
  Setting unknown property: craft\models\Update::packageName
  </code></pre>
  
  <p>Current Stack Trace is </p>
  
  <pre><code>yii\base\UnknownPropertyException: Setting unknown property: craft\models\Update::packageName in C:\websites\sitename\craft\vendor\yiisoft\yii2\base\Component.php:209
  Stack trace:
  #0 C:\websites\sitename\craft\vendor\yiisoft\yii2\BaseYii.php(546): yii\base\Component-&gt;__set('packageName', 'craftcms/cms')
  #1 C:\websites\sitename\craft\vendor\yiisoft\yii2\base\BaseObject.php(107): yii\BaseYii::configure(Object(craft\models\Update), Array)
  #2 C:\websites\sitename\craft\vendor\craftcms\cms\src\models\Updates.php(46): yii\base\BaseObject-&gt;__construct(Array)
  #3 C:\websites\sitename\craft\vendor\yiisoft\yii2\base\BaseObject.php(109): craft\models\Updates-&gt;init()
  #4 C:\websites\sitename\craft\vendor\craftcms\cms\src\services\Updates.php(106): yii\base\BaseObject-&gt;__construct(Array)
  #5 C:\websites\sitename\craft\vendor\craftcms\cms\src\services\Updates.php(77): craft\services\Updates-&gt;getUpdates()
  #6 C:\websites\sitename\craft\vendor\craftcms\cms\src\utilities\Updates.php(54): craft\services\Updates-&gt;getTotalAvailableUpdates()
  #7 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\variables\Cp.php(139): craft\utilities\Updates::badgeCount()
  #8 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Extension\Core.php(1619): craft\web\twig\variables\Cp-&gt;nav()
  #9 C:\websites\sitename\craft\vendor\craftcms\cms\src\helpers\Template.php(73): twig_get_attribute(Object(craft\web\twig\Environment), Object(Twig_Source), Object(craft\web\twig\variables\Cp), 'nav', Array, 'method', false, false)
  #10 C:\websites\sitename\craft\storage\runtime\compiled_templates\f1\f13f7c4e8944c04d846e31ed00e14a2608629f98720d53716d0af4c42c0406d5.php(194): craft\helpers\Template::attribute(Object(craft\web\twig\Environment), Object(Twig_Source), Object(craft\web\twig\variables\Cp), 'nav', Array, 'method')
  #11 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(189): __TwigTemplate_1c32b97c6410ddc5ca9b8ed7d632b5bccbdeb0d143fe0597ccd3c7f99a64b01d-&gt;block_body(Array, Array)
  #12 C:\websites\sitename\craft\storage\runtime\compiled_templates\3c\3c75836f7fba009cc0921a3f7ba15118accf07b23220196c5f2089ccf35cd6d2.php(60): Twig_Template-&gt;displayBlock('body', Array, Array)
  #13 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(390): __TwigTemplate_718542758bc3fa1a8dece1e58e1d8b4f11f05f5a4656e1b152708d368c4b05c8-&gt;doDisplay(Array, Array)
  #14 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\Template.php(49): Twig_Template-&gt;displayWithErrorHandling(Array, Array)
  #15 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(367): craft\web\twig\Template-&gt;displayWithErrorHandling(Array, Array)
  #16 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\Template.php(31): Twig_Template-&gt;display(Array, Array)
  #17 C:\websites\sitename\craft\storage\runtime\compiled_templates\a9\a92e015145d806a86731623fdb41794441f6ce354bf63ad55510fe6927ea8dba.php(40): craft\web\twig\Template-&gt;display(Array, Array)
  #18 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(390): __TwigTemplate_de404dcb5b6d933d901b54f0a85d2db6dc492673ab3c7c316d22689e124b1ce3-&gt;doDisplay(Array, Array)
  #19 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\Template.php(49): Twig_Template-&gt;displayWithErrorHandling(Array, Array)
  #20 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(367): craft\web\twig\Template-&gt;displayWithErrorHandling(Array, Array)
  #21 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\Template.php(31): Twig_Template-&gt;display(Array, Array)
  #22 C:\websites\sitename\craft\storage\runtime\compiled_templates\f1\f13f7c4e8944c04d846e31ed00e14a2608629f98720d53716d0af4c42c0406d5.php(94): craft\web\twig\Template-&gt;display(Array, Array)
  #23 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(390): __TwigTemplate_1c32b97c6410ddc5ca9b8ed7d632b5bccbdeb0d143fe0597ccd3c7f99a64b01d-&gt;doDisplay(Array, Array)
  #24 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\Template.php(49): Twig_Template-&gt;displayWithErrorHandling(Array, Array)
  #25 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(367): craft\web\twig\Template-&gt;displayWithErrorHandling(Array, Array)
  #26 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\Template.php(31): Twig_Template-&gt;display(Array, Array)
  #27 C:\websites\sitename\craft\storage\runtime\compiled_templates\2f\2feefa4af3fc2f906821193bbbbf4e9ca21facd5b4b1b05d172ff99bc3ca9b0b.php(54): craft\web\twig\Template-&gt;display(Array, Array)
  #28 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(390): __TwigTemplate_72f43dcfebc59ef2bfc851cba046d85e43d849a897663768563cd8bc31054a3c-&gt;doDisplay(Array, Array)
  #29 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\Template.php(49): Twig_Template-&gt;displayWithErrorHandling(Array, Array)
  #30 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(367): craft\web\twig\Template-&gt;displayWithErrorHandling(Array, Array)
  #31 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\Template.php(31): Twig_Template-&gt;display(Array, Array)
  #32 C:\websites\sitename\craft\storage\runtime\compiled_templates\9a\9af64376a506112ffe96902525865031f675496782739bd558893f01cdb9025f.php(45): craft\web\twig\Template-&gt;display(Array, Array)
  #33 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(390): __TwigTemplate_3c4744d30b21915bdce9ac235c7a319fea11ce6aabf873f2255e3c730b46e4d2-&gt;doDisplay(Array, Array)
  #34 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\Template.php(49): Twig_Template-&gt;displayWithErrorHandling(Array, Array)
  #35 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(367): craft\web\twig\Template-&gt;displayWithErrorHandling(Array, Array)
  #36 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\Template.php(31): Twig_Template-&gt;display(Array, Array)
  #37 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(375): craft\web\twig\Template-&gt;display(Array)
  #38 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Environment.php(289): Twig_Template-&gt;render(Array)
  #39 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\View.php(331): Twig_Environment-&gt;render('entries', Array)
  #40 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\View.php(378): craft\web\View-&gt;renderTemplate('entries', Array)
  #41 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\Controller.php(156): craft\web\View-&gt;renderPageTemplate('entries', Array)
  #42 C:\websites\sitename\craft\vendor\craftcms\cms\src\controllers\TemplatesController.php(78): craft\web\Controller-&gt;renderTemplate('entries', Array)
  #43 [internal function]: craft\controllers\TemplatesController-&gt;actionRender('entries', Array)
  #44 C:\websites\sitename\craft\vendor\yiisoft\yii2\base\InlineAction.php(57): call_user_func_array(Array, Array)
  #45 C:\websites\sitename\craft\vendor\yiisoft\yii2\base\Controller.php(157): yii\base\InlineAction-&gt;runWithParams(Array)
  #46 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\Controller.php(104): yii\base\Controller-&gt;runAction('render', Array)
  #47 C:\websites\sitename\craft\vendor\yiisoft\yii2\base\Module.php(528): craft\web\Controller-&gt;runAction('render', Array)
  #48 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\Application.php(282): yii\base\Module-&gt;runAction('templates/rende...', Array)
  #49 C:\websites\sitename\craft\vendor\yiisoft\yii2\web\Application.php(103): craft\web\Application-&gt;runAction('templates/rende...', Array)
  #50 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\Application.php(271): yii\web\Application-&gt;handleRequest(Object(craft\web\Request))
  #51 C:\websites\sitename\craft\vendor\yiisoft\yii2\base\Application.php(386): craft\web\Application-&gt;handleRequest(Object(craft\web\Request))
  #52 C:\websites\sitename\craft\web\index.php(21): yii\base\Application-&gt;run()
  #53 {main}
  </code></pre>
  
  <p>Can i recover this on my local environment?</p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2020-02-28T19:37:01.560Z
Comments.Text: How did you pull the files down?  If you have Composer installed on the command line, try running `composer install` from your project's root to pull in a fresh set of dependencies in the `vendor` folder.
Comments.UserDisplayName: Brad Bell
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2020-02-28T21:37:27.307Z
Comments.Text: I tried various methods. Zipped and pulled whole thing down including vendors etc. Then tried just pulling down the composer files and running composer install but was still getting the issues above. I finally resolved by uploading to my own hosting environment where it worked fine. Updated craft to latest version and all plugins. Then pulled down locally and working fine now. Must have been some issue with my local environment.
Comments.UserDisplayName: mmc501
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2020-02-29T03:42:10.507Z
Comments.Text: Glad you're sorted... would you mind adding that as an official answer?
Comments.UserDisplayName: Brad Bell
Tags: <error-message><error>
Title: Setting unknown property: craft\models\Update::packageName
ThreadText: # Setting unknown property: craft\models\Update::packageName
  
  (Asked by: username_0 on 2020-02-28)
  
  I am taking over a Craft website for a client. It is currently working fine on the hosting environment.
  
  I have pulled the website down locally from the hosting environment - the exact same files and database. It loads fine on the front end but when i try to login to the CMS I get the following error:
  
  ```
  Unknown Property – yii\base\UnknownPropertyException
  
  Setting unknown property: craft\models\Update::packageName
  
  ```
  
  Current Stack Trace is
  
  ```
  yii\base\UnknownPropertyException: Setting unknown property: craft\models\Update::packageName in C:\websites\sitename\craft\vendor\yiisoft\yii2\base\Component.php:209
  Stack trace:
  #0 C:\websites\sitename\craft\vendor\yiisoft\yii2\BaseYii.php(546): yii\base\Component->__set('packageName', 'craftcms/cms')
  #1 C:\websites\sitename\craft\vendor\yiisoft\yii2\base\BaseObject.php(107): yii\BaseYii::configure(Object(craft\models\Update), Array)
  #2 C:\websites\sitename\craft\vendor\craftcms\cms\src\models\Updates.php(46): yii\base\BaseObject->__construct(Array)
  #3 C:\websites\sitename\craft\vendor\yiisoft\yii2\base\BaseObject.php(109): craft\models\Updates->init()
  #4 C:\websites\sitename\craft\vendor\craftcms\cms\src\services\Updates.php(106): yii\base\BaseObject->__construct(Array)
  #5 C:\websites\sitename\craft\vendor\craftcms\cms\src\services\Updates.php(77): craft\services\Updates->getUpdates()
  #6 C:\websites\sitename\craft\vendor\craftcms\cms\src\utilities\Updates.php(54): craft\services\Updates->getTotalAvailableUpdates()
  #7 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\variables\Cp.php(139): craft\utilities\Updates::badgeCount()
  #8 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Extension\Core.php(1619): craft\web\twig\variables\Cp->nav()
  #9 C:\websites\sitename\craft\vendor\craftcms\cms\src\helpers\Template.php(73): twig_get_attribute(Object(craft\web\twig\Environment), Object(Twig_Source), Object(craft\web\twig\variables\Cp), 'nav', Array, 'method', false, false)
  #10 C:\websites\sitename\craft\storage\runtime\compiled_templates\f1\f13f7c4e8944c04d846e31ed00e14a2608629f98720d53716d0af4c42c0406d5.php(194): craft\helpers\Template::attribute(Object(craft\web\twig\Environment), Object(Twig_Source), Object(craft\web\twig\variables\Cp), 'nav', Array, 'method')
  #11 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(189): __TwigTemplate_1c32b97c6410ddc5ca9b8ed7d632b5bccbdeb0d143fe0597ccd3c7f99a64b01d->block_body(Array, Array)
  #12 C:\websites\sitename\craft\storage\runtime\compiled_templates\3c\3c75836f7fba009cc0921a3f7ba15118accf07b23220196c5f2089ccf35cd6d2.php(60): Twig_Template->displayBlock('body', Array, Array)
  #13 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(390): __TwigTemplate_718542758bc3fa1a8dece1e58e1d8b4f11f05f5a4656e1b152708d368c4b05c8->doDisplay(Array, Array)
  #14 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\Template.php(49): Twig_Template->displayWithErrorHandling(Array, Array)
  #15 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(367): craft\web\twig\Template->displayWithErrorHandling(Array, Array)
  #16 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\Template.php(31): Twig_Template->display(Array, Array)
  #17 C:\websites\sitename\craft\storage\runtime\compiled_templates\a9\a92e015145d806a86731623fdb41794441f6ce354bf63ad55510fe6927ea8dba.php(40): craft\web\twig\Template->display(Array, Array)
  #18 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(390): __TwigTemplate_de404dcb5b6d933d901b54f0a85d2db6dc492673ab3c7c316d22689e124b1ce3->doDisplay(Array, Array)
  #19 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\Template.php(49): Twig_Template->displayWithErrorHandling(Array, Array)
  #20 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(367): craft\web\twig\Template->displayWithErrorHandling(Array, Array)
  #21 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\Template.php(31): Twig_Template->display(Array, Array)
  #22 C:\websites\sitename\craft\storage\runtime\compiled_templates\f1\f13f7c4e8944c04d846e31ed00e14a2608629f98720d53716d0af4c42c0406d5.php(94): craft\web\twig\Template->display(Array, Array)
  #23 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(390): __TwigTemplate_1c32b97c6410ddc5ca9b8ed7d632b5bccbdeb0d143fe0597ccd3c7f99a64b01d->doDisplay(Array, Array)
  #24 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\Template.php(49): Twig_Template->displayWithErrorHandling(Array, Array)
  #25 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(367): craft\web\twig\Template->displayWithErrorHandling(Array, Array)
  #26 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\Template.php(31): Twig_Template->display(Array, Array)
  #27 C:\websites\sitename\craft\storage\runtime\compiled_templates\2f\2feefa4af3fc2f906821193bbbbf4e9ca21facd5b4b1b05d172ff99bc3ca9b0b.php(54): craft\web\twig\Template->display(Array, Array)
  #28 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(390): __TwigTemplate_72f43dcfebc59ef2bfc851cba046d85e43d849a897663768563cd8bc31054a3c->doDisplay(Array, Array)
  #29 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\Template.php(49): Twig_Template->displayWithErrorHandling(Array, Array)
  #30 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(367): craft\web\twig\Template->displayWithErrorHandling(Array, Array)
  #31 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\Template.php(31): Twig_Template->display(Array, Array)
  #32 C:\websites\sitename\craft\storage\runtime\compiled_templates\9a\9af64376a506112ffe96902525865031f675496782739bd558893f01cdb9025f.php(45): craft\web\twig\Template->display(Array, Array)
  #33 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(390): __TwigTemplate_3c4744d30b21915bdce9ac235c7a319fea11ce6aabf873f2255e3c730b46e4d2->doDisplay(Array, Array)
  #34 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\Template.php(49): Twig_Template->displayWithErrorHandling(Array, Array)
  #35 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(367): craft\web\twig\Template->displayWithErrorHandling(Array, Array)
  #36 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\twig\Template.php(31): Twig_Template->display(Array, Array)
  #37 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Template.php(375): craft\web\twig\Template->display(Array)
  #38 C:\websites\sitename\craft\vendor\twig\twig\lib\Twig\Environment.php(289): Twig_Template->render(Array)
  #39 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\View.php(331): Twig_Environment->render('entries', Array)
  #40 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\View.php(378): craft\web\View->renderTemplate('entries', Array)
  #41 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\Controller.php(156): craft\web\View->renderPageTemplate('entries', Array)
  #42 C:\websites\sitename\craft\vendor\craftcms\cms\src\controllers\TemplatesController.php(78): craft\web\Controller->renderTemplate('entries', Array)
  #43 [internal function]: craft\controllers\TemplatesController->actionRender('entries', Array)
  #44 C:\websites\sitename\craft\vendor\yiisoft\yii2\base\InlineAction.php(57): call_user_func_array(Array, Array)
  #45 C:\websites\sitename\craft\vendor\yiisoft\yii2\base\Controller.php(157): yii\base\InlineAction->runWithParams(Array)
  #46 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\Controller.php(104): yii\base\Controller->runAction('render', Array)
  #47 C:\websites\sitename\craft\vendor\yiisoft\yii2\base\Module.php(528): craft\web\Controller->runAction('render', Array)
  #48 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\Application.php(282): yii\base\Module->runAction('templates/rende...', Array)
  #49 C:\websites\sitename\craft\vendor\yiisoft\yii2\web\Application.php(103): craft\web\Application->runAction('templates/rende...', Array)
  #50 C:\websites\sitename\craft\vendor\craftcms\cms\src\web\Application.php(271): yii\web\Application->handleRequest(Object(craft\web\Request))
  #51 C:\websites\sitename\craft\vendor\yiisoft\yii2\base\Application.php(386): craft\web\Application->handleRequest(Object(craft\web\Request))
  #52 C:\websites\sitename\craft\web\index.php(21): yii\base\Application->run()
  #53 {main}
  
  ```
  
  Can i recover this on my local environment?
  
  **Tags:** error-message, error
  
  > **Comments:**
  > **username_1**: How did you pull the files down?  If you have Composer installed on the command line, try running `composer install` from your project's root to pull in a fresh set of dependencies in the `vendor` folder.  
  > **username_0**: I tried various methods. Zipped and pulled whole thing down including vendors etc. Then tried just pulling down the composer files and running composer install but was still getting the issues above. I finally resolved by uploading to my own hosting environment where it worked fine. Updated craft to latest version and all plugins. Then pulled down locally and working fine now. Must have been some issue with my local environment.  
  > **username_1**: Glad you're sorted... would you mind adding that as an official answer?  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_0 on 2020-02-29. Score: 1 | Accepted answer
  
  I ended up uploading the files to my own hosting environment where I updated it to the latest version of Craft and plugins etc. Then pulled down locally and it worked fine.
  
  > **Comments:**
  > **username_2**: I ran into something similar with a plugin called Neo. Instead of putting stuff up on a hosting environment, for local development, I just had to run "composer update" in my VM to get the latest in case anyone else runs into this issue.  
  
  ---
  
  ### Answer by username_3 on 2021-05-19. Score: 1
  
  I ran into a similar issue with a local site I was trying to revert from v3.6 to match an import of the production site database which is still at v3.5. I tracked the error to a function that appeared to be calling a cached version of a plugin model. I resolved it by running the console command to flush all caches.
  
  ```
  ./craft clear-caches/all
  
  ```
  
  <https://craftcms.com/docs/3.x/console-commands.html#clear-caches>
  
  
  ---
  
  