Its says we could not determine the cause for error

Build issue
#1

Are you having issues with building your app? We’re here to help!

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  • Take a look at the build log included in the email you received from us to find out more about why your build failed
  • Double-check that you have generated all required assets correctly: Build Service & required assets - AppGyver

If you’re unable to resolve the issue, please include your app ID and the runtime version you are building with in your post, so we can investigate further.

My AppGyver user ID

678461

  • What went wrong:
    Execution failed for task ‘:app:packageReleaseBundle’.

java.util.concurrent.ExecutionException: java.lang.RuntimeException: jarsignerfailed with exit code 1 :
jarsigner: Certificate chain not found for: upload. upload must reference a valid KeyStore key entry containing a private key and corresponding public key certificate chain.

  • 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 35s

im kind of new to app building so i definitely need guidance

#2

Hi! Have you made and uploaded a keystore yet? Check the steps here: Android Builds - AppGyver

If you have your keystore and password set correctly, please try building again. There was an update yesterday that should fix some issues in Build Service, perhaps it also affected yours.