flutter pub run build_runner build not working

Issue when running flutter pub run build_runner build I get this error. Failed to build build_runner:build_runner: ../../snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/analyzer-0.41.2/lib/src/error/best_practices_verifier.dart:258:50: Error: The property ‘displayString’ is defined in multiple extensions for ‘TargetKind’ and neither is more specific. – ‘TargetKind’ is from ‘package:meta/meta_meta.dart’ (‘../../snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/meta-1.7.0/lib/meta_meta.dart’). Try

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