ERROR: Failed to run signapk.jar: return code 1:
java.io.FileNotFoundException: keys/releasekey.x509.pem (No such file or directory)
at java.base/java.io.FileInputStream.open0(Native Method)
at java.base/java.io.FileInputStream.open(FileInputStream.java:219)
at java.base/java.io.FileInputStream.<init>(FileInputStream.java:157)
at com.android.signapk.SignApk.readPublicKey(SignApk.java:187)
at com.android.signapk.SignApk.main(SignApk.java:1127)
grapheneos-otacerts/
is missing a bluejay.pemIgnoring that, it fails with: