Android release build fails with buildReleasePreBundle on AGP 8+ (Sequence contains more than one matching element)

[Ab-Aayan]

The Android release build fails when using easy_pdf_viewer / pdf_viewer with Android Gradle Plugin 8+. Debug builds work, but flutter build appbundle fails during buildReleasePreBundle with Sequence contains more than one matching element. The plugin uses deprecated Android APIs and appears incompatible with AGP 8+, blocking Play Store release builds.

Note: /Users/Developer/.pub-cache/git/pdf_viewer-7f6b2e0e7ba4fb1ee0b3408154680b08b6f60f90/android/src/main/java/dev/kaichi/easy_pdf_viewer/EasyPdfViewerPlugin.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':app:buildReleasePreBundle'.

Sequence contains more than one matching element.

• 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.

BUILD FAILED in 5m 4s