Failed to find assets path for "Frameworks/App.framework/flutter_assets"

[melvinm99]

Hi, I'm writing here to report a potential bug I've encountered building and running my app on iOS: it doesn't load any asset I provided. Assets are correctly defined, since on Android it builds ok. They get replaced with question marks or other icons as you can see in this screen:

The error in Xcode log is: Failed to find assets path for "flutter_assets".

I've tried both master and stable channel, getting the same error. Then, I switched to beta channel and now everything is ok (correct assets are loaded in the running app), so maybe it's a problem that has been solved in latest commits/releases.

Steps to Reproduce

flutter build ios --release

Logs

Failed to find assets path for "flutter_assets"
Engine run configuration was invalid.
Could not launch engine with configuration.

Flutter doctor and analyze where ok, sorry but now I don't have all the logs anymore since I switched the channel.

[hongliang211]

I have the same problem too

[yxwandroid]

I have the same problem too

[CTaoWu]

I think your 'Script' is Missing!
"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh" build
"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh" embed

[escamoteur]

Hi, could you please confirm if this problem still exists with the latest versions on stable or master?

Thanks a lot

[iapicca]

Without additional information, we are unfortunately not sure how to resolve this issue. We are therefore reluctantly going to close this bug for now. Please don't hesitate to comment on the bug if you have any more information for us; we will reopen it right away!

Thanks for your contribution.

[aberror]

The issue still exists, Environment:
Doctor summary (to see all details, run flutter doctor -v):
[!] Flutter (Channel stable, v1.7.8+hotfix.4, on Mac OS X 10.15.1 19B88, locale zh-Hans-CN)
✗ Downloaded executables cannot execute on host.
See #6207 for more information

[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
[✓] Xcode - develop for iOS and macOS (Xcode 11.2)
[✓] iOS tools - develop for iOS devices
[✓] Android Studio (version 3.5)
[✓] VS Code (version 1.39.2)
[✓] Connected device (1 available)

! Doctor found issues in 1 category.

[aberror]

flutter pages failed to load, logs are below:
Failed to find assets path for "Frameworks/App.framework/flutter_assets"
[VERBOSE-2:engine.cc(118)] Engine run configuration was invalid.
[VERBOSE-2:FlutterEngine.mm(308)] Could not launch engine with configuration.

[iapicca]

Hi @aberror
this issue is dated back 9 months,
please open a new issue proving all or some of the information
requested in the template,
thank you

[dahabit]

1- rm -rf ios/Flutter/App.framework

2- Change the Runner target build settings Build Phases > Thin Binary script as follows:

/bin/sh "$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh" embed
/bin/sh "$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh" thin

[davefaliskie]

I think your 'Script' is Missing!
"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh" build
"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh" embed

When I add that I get an error /bin/sh: /packages/flutter_tools/bin/xcode_backend.sh: No such file or directory this is when running in xcode, and I've cleaned

[kinan96]

I think your 'Script' is Missing!
"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh" build
"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh" embed

where I should write that ?

[srenghong]

1- rm -rf ios/Flutter/App.framework

2- Change the Runner target build settings Build Phases > Thin Binary script as follows:

/bin/sh "$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh" embed
/bin/sh "$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh" thin

work for me, thanks

[oengmengthong]

if solution below doesn't work, let try this:

create a new flutter project.
and then copy folder lib and file pubspace.yaml from old project to the new project.
I found many file, are missing on folder ios at an old project

[tong-do]

I think your 'Script' is Missing!
"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh" build
"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh" embed

it's worked for me! thx

[tanmaypandharipande]

flutter upgrade

worked for me !

[Ahmadre]

1- rm -rf ios/Flutter/App.framework

2- Change the Runner target build settings Build Phases > Thin Binary script as follows:

/bin/sh "$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh" embed
/bin/sh "$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh" thin

Thank you so much @dahabit you helped me a lot :)

[github-actions]

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.