Need SHA-1 certificate fingerprint to use Google Maps in Flutter, Get Error Unsupported class file major version 65

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I want to use Google Maps in my Flutter App. To restrict the Android API Key, I need a SHA-1 certificate fingerprint. I went in the Flutter Terminal and typed "cd android" and then ./gradlew signingReport, but I got this error message:

`Starting a Gradle Daemon, 1 stopped Daemon could not be reused, use --status for details

Task :gradle:compileGroovy FAILED

FAILURE: Build failed with an exception.

  • What went wrong: Execution failed for task ':gradle:compileGroovy'.

BUG! exception in phase 'semantic analysis' in source unit 'C:\src\flutter\flutter\packages\flutter_tools\gradle\src\main\groovy\flutter.groovy' Unsupported class file major version 65

  • 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.

BUILD FAILED in 20s 2 actionable tasks: 1 executed, 1 up-to-date `

What can I do to resolve this error? I am new to Flutter, so I do need babysteps if possible. Thank you so much.

I was expecting to get a SHA-1 certificate fingerprint when running "cd android" and then "./gradlew signingReport", but instead I got the error.

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