Your build for application Sanadek ended up failing. We could not determine the cause of the error

Hello,
When i try to generate the APK then the system keep showing me a failure in generating the build with unclear message as you can see below:

"Your build for application Sanadek ended up failing.

We could not determine the cause of the error."

Anyone can help in what is the issue and how we can fix the issue?186285-error.log (26.6 KB)

Hi, the relevant error in the log is:

Certificate chain not found for: sanadek. sanadek must reference a valid KeyStore key entry containing a private key and corresponding public key certificate chain.

Does your keystore have a password? You should be able to generate a valid one using the instructions here: Android Builds - Composer