title: xcode_backend.sh: no such file or directory. Do I need to create this file?
body: <p>My Flutter Project won't run on the ios simulator and is throwing this error:</p>
  <blockquote>
  <p>Launching lib/main.dart on iPhone Xʀ in debug mode...</p>
  <p>Running Xcode build...</p>
  <p>Xcode build done.                                            7.6s</p>
  <p>Failed to build iOS app</p>
  <p>Error output from Xcode build:</p>
  <p>↳</p>
  <p>** BUILD FAILED **</p>
  </blockquote>
  <p>Xcode's output:</p>
  <blockquote>
  <p>↳</p>
  <p>=== BUILD TARGET Runner OF PROJECT Runner WITH CONFIGURATION Debug ===</p>
  <p>/bin/sh: /Users/pinercode/AndroidStudioProjects/bmi-calculator-flutter/packages/flutter_tools/bin/xcode_backend.sh: No such file or directory</p>
  <p>Could not build the application for the simulator.</p>
  <p>Error launching application on iPhone Xʀ.</p>
  </blockquote>
  <p>The xcode error was also as follows:</p>
  <blockquote>
  <p>/bin/sh: /Users/pinercode/AndroidStudioProjects/bmi-calculator-flutter/packages/flutter_tools/bin/xcode_backend.sh: No such file or directory</p>
  </blockquote>
  <p>I've already tried running flutter doctor and there were no errors.
  I also tried re-rooting my xcode 'FLUTTER_ROOT' and 'FLUTTER_APPLICATION_PATH' in build settings, which did not work.</p>