[Flutter] Gradle Sync Failure: Unsupported Class File Major Version 65 - Incompatible Java and...

enter image description here while running my app in my phone i am getting the above error in the image

i tried upgrading gradle updating my android studio upgrading my gradle-wrapper.properties to distributionUrl=https://services.gradle.org/distributions/gradle-7.0.2-bin.zip and was expecting to solve the error but i was getting some another error

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