Unable to find valid certification path to requested target - error even after cert imported

If you are getting the "unable to find valid certification path to requested target" error even after importing the certificate, there are a few possible causes and solutions:

1. Make sure that the certificate is imported into the correct keystore. Java uses a set of keystores to store trusted certificates and certificate authorities (CAs). The keystore file is typically located at $JAVA_HOME/jre/lib/security/cacerts. You can use the keytool command to list the certificates in the keystore and verify that the certificate is imported:

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   keytool -list -keystore $JAVA_HOME/jre/lib/security/cacerts
   

   If the certificate is not in the keystore, you can import it using the keytool command:

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   keytool -import -keystore $JAVA_HOME/jre/lib/security/cacerts -file /path/to/certificate.cer
   

   Replace /path/to/certificate.cer with the path to the certificate file.

2. Make sure that the certificate is trusted. If the certificate is not trusted, it will not be accepted by the JVM.