How to fix error :processDebugMainManifest DEBUG

Question

I faced this debug while trying to run my own flutter project in device.this is some description:: Execution failed for task ':app:processDebugMainManifest'.

Unable to make field private final java.lang.String java.io.File.path accessible: module java.base does not "opens java.io" to unnamed module @6109445c

• Try:

Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

Can anyone could help me!!

Solution

I just experienced this myself while checking java16 compatibility with Ankidroid (link because it is open source, you can reproduce yourself if you like).

I would guess you are attempting to use java16 to compile your app?

As of this writing (April 16, 2021) Android Gradle Plugin is not compatible with java16 - not 4.1.3, 4.2.0-rc01 nor 7.0.0alpha14 (all the current versions as I write this.

If you use java8 or java11 it works.

Android Studio uses java11 internally now for 4.2.x so that is the safest bet at this point for Android development.

I have logged this upstream issue so Google is aware, and others may track it in case there is a good workaround/explanation/reason https://issuetracker.google.com/u/1/issues/186806275

Comments

[Soumya Boral]

Uninstalled 16 and installed 11. It started to work.

[Pankaj Bansal]

Basically these above command according to Mac so if you are using Windows or Linux please change path accordingly.