Not sure on the ssl one. The java.lang.NullPointerException: Inflater has been closed problem I've seen too. Could not pinpoint a cause yet. Googling reveals other Java projects have experienced this ...

General error: "java.lang.NullPointerException" [50000-200] #2774 Closed VMPyankov opened on Jul 24, 2020 ...

Then there’s the NullPointerException. Null pointer exception is an “exception” (error) that is particularly common when programming in Java.