title: flutter doctor 'zsh: command not found'
body: <p>I have installed flutter and set up the path with the <code>zsh</code> file for Catalina version of mac however when I run flutter doctor or flutter precache, I receive <code>zsh</code>: command not found: flutter. NOTE: I managed to get through these steps previously and set up android studio however I had issues when I tried to connect the simulator for Xcode and now I have had to start again.</p>
  <p>UPDATE: When running 'flutter' or 'flutter doctor', I receive this error: <code>Error when reading '../../../../documents/flutter/bin/cache/dart-sdk/bin/snapshots/pub.dart.snapshot': No such file or directory</code> and it says that <code>pub upgrade</code> failed after 10 tries.
  How would I solve this?</p>
  <p>When I run <code>ls -a</code> in the home directory, I see that there's a .bash_profile, a .zshrc file and a .zprofile (which I created previously) in there. Is this related to the problem?</p>