The "invalid keystore format" error is usually caused by trying to open a file that is not a valid Java KeyStore (JKS) file. This can happen if you have specified the wrong file, or if the file has become corrupted.
To fix the error, you should first verify that you are specifying the correct file by checking the path and filename that you are using. Make sure that the file is a JKS file and not some other type of file, such as a PKCS#12 file.
If you are sure that you have the correct file, you may need to try to recreate the keystore. You can do this using the
keytool
utility, which is included with the Java Development Kit (JDK). Here is an example of how to create a new JKS file:
keytool -genkey -alias mykey -keystore mykeystore.jks -storepass mystorepass -keypass mykeypass
This will create a new JKS file called mykeystore.jks with a single key entry called mykey. Replace mykeystore.jks, mystorepass, and mykeypass with your own desired keystore filename, store password, and key password.
If you are still experiencing problems, you may need to further troubleshoot the issue by checking the logs or seeking additional assistance.