Error getting theme FormatException: Unexpected end of input(at character 1) when app in release mode

[Arthur-Kamau]

Steps to Reproduce

Create an app.
build it .
run in release mode or run an apk from flutter build apk

On the device

Error as is visible on device in --release mode.

flutter run -v

flutter analyze

flutter doctor -v

Why would the app run okay in debug mode but cause an error in release mode ?

[escamoteur]

Is this the default app that gets created when you run flutter create ?
Have you tried it with the stable branch I saw you are on beta at the moment?

[Arthur-Kamau]

After switching to master channel.
The result is still the same .
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However i think this worth mentioning the project had been created last year around September and i had to manually migrate to android x.
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Upon further investigation the error starts from a method channel, that's called from a future builder that's a parent of Material App.(in debug it works okay).

[escamoteur]

Could you just create a new project and copy your files into it to make sure its still a problem in today's created projects please?
Also isn't there a stacktrace when this error happens? Try running it from VS code or AS and set break on all exceptions

[Arthur-Kamau]

Thanks for the quick response.
After creating a new project and copying all the files it worked okay.
Unfortunately the error did not have any stack trace.
thanks again.

[Arthur-Kamau]

The error being displayed.

[escamoteur]

Look at the stack trace. This is an error comes from flutter_local_notification so its a different problem.

[Arthur-Kamau]

Yes there is an exception from flutter_local_notification but that's a platform exception and not a Format exception, from the screen shot above the exception was and is still a format exception.