Try creating the file referenced by the URI, or try using a URI for a file that does exist. See https://dart.dev/diagnostics/uri_does_not_exist to learn more about this problem.

Try creating the file referenced by the URI, or try using a URI for a file that does exist. See https://dart.dev/diagnostics/uri_does_not_exist to learn more about this problem.

Try creating the file referenced by the URI, or try using a URI for a file that does exist. See https://dart.dev/diagnostics/uri_does_not_exist to learn more about this problem.

Try creating the file referenced by the URI, or try using a URI for a file that does exist. See https://dart.dev/diagnostics/uri_does_not_exist to learn more about this problem.

Try importing the library that defines 'runApp', correcting the name to the name of an existing function, or defining a function named 'runApp'. See https://dart.dev/diagnostics/undefined_function to learn more about this problem.

Try specifying a different superclass, or removing the extends clause. See https://dart.dev/diagnostics/extends_non_class to learn more about this problem.

Try changing the name to the name of an existing named super constructor parameter, or creating such named parameter. See https://dart.dev/diagnostics/super_formal_parameter_without_associated_named to learn more about this problem.

Try changing the name to the name of an existing class, or creating a class with the name 'Widget'. See https://dart.dev/diagnostics/undefined_class to learn more about this problem.

Try changing the name to the name of an existing class, or creating a class with the name 'BuildContext'. See https://dart.dev/diagnostics/undefined_class to learn more about this problem.

Try correcting the name to the name of an existing method, or defining a method named 'MaterialApp'. See https://dart.dev/diagnostics/undefined_method to learn more about this problem.

The following actions uses node12 which is deprecated and will be forced to run on node16: invertase/github-action-dart-analyzer@v1. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

Try updating this class to match the superclass, or removing the override annotation. See https://dart.dev/diagnostics/override_on_non_overriding_member to learn more about this problem.

Try updating this class to match the superclass, or removing the override annotation. See https://dart.dev/diagnostics/override_on_non_overriding_member to learn more about this problem.

Try updating this class to match the superclass, or removing the override annotation. See https://dart.dev/diagnostics/override_on_non_overriding_member to learn more about this problem.

Try updating this class to match the superclass, or removing the override annotation. See https://dart.dev/diagnostics/override_on_non_overriding_member to learn more about this problem.

Try updating this class to match the superclass, or removing the override annotation. See https://dart.dev/diagnostics/override_on_non_overriding_member to learn more about this problem.

Try updating this class to match the superclass, or removing the override annotation. See https://dart.dev/diagnostics/override_on_non_overriding_member to learn more about this problem.

Try updating this class to match the superclass, or removing the override annotation. See https://dart.dev/diagnostics/override_on_non_overriding_member to learn more about this problem.

Try updating this class to match the superclass, or removing the override annotation. See https://dart.dev/diagnostics/override_on_non_overriding_member to learn more about this problem.