FAILURE: Build failed with an exception.

* Where:
Script '/b/s/w/ir/x/w/flutter/packages/flutter_tools/gradle/src/main/groovy/flutter.groovy' line: 168

* What went wrong:
Could not compile script '/b/s/w/ir/x/w/flutter/packages/flutter_tools/gradle/src/main/groovy/flutter.groovy'.
> startup failed:
  script '/b/s/w/ir/x/w/flutter/packages/flutter_tools/gradle/src/main/groovy/flutter.groovy': 168: primitive type parameters not allowed here;
     solution: use the corresponding wrapper type, such as Integer for int @ line 168, column 41.
     e static final Map<String, int> ABI_VERS
                                   ^

  1 error