Error while uploading Flutter App to App Store: Non-public API usage

Question

I am new in Flutter Development and i have developed an app with Webview. I have upload an apk on Google Play Store that is accepted but for App Store it shows some error.

Please find below error,

ITMS-90338: Non-public API usage - The app references non-public symbols in Frameworks/Flutter.framework/Flutter: _ptrace. If method names in your source code match the private Apple APIs listed above, altering your method names will help prevent this app from being flagged in future submissions. In addition, note that one or more of the above APIs may be located in a static library that was included with your app. If so, they must be removed.

For this error i have search many things but i am unable found any solution for this. So please any one who is capable of solving this please help me to resolve this.

Thanks & Regards,

Answer 1

In my case, I updated my Mac to 10.15(Catalina), while the update my cocoapods installation wasn't there. So whenever I try to upload using the command flutter build ios --release and archiving it. Apple sent me the same email you received.

You can install cocoapods using the following commands.

step 1 Open terminal

step 2 command: sudo gem install cocoapods

step 3 set your project path on the terminal.

step 4 command: pod init

I hope it helps.

Answer 2

This happens if you are submitting the debug version to the AppStore, Flutter team recommends you to first run

flutter build ios --release 

before archiving your app in Xcode.

Answer 3

First make sure you are submitting a release build with flutter build ios --release

If that's not the problem here you could find similar problems related:

flutter build ios --release may use a debug Flutter.framework by mistake