当我尝试建立一个附件时，会发生此错误！
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:validateSigningRelease'.
> Keystore file not set for signing config release
* 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 37s