I am confused with this error message.

[DroidCrafter23]

I have recently received support for my upcoming mod, which I have implemented but have received multiple errors giving the same output. I am not sure what to do as I have found out the meaning of java.lang.IllegalStateException and java.lang.ExceptionInInititializerError, though this has not helped me in the slightest! I have performed scans though I am still not sure...

 

Caused by: java.lang.IllegalStateException: Cannot register new entries to DeferredRegister after RegisterEvent has been fired. (3x)

Caused by: java.lang.ExceptionInInitializerError (2x)

[DroidCrafter23]

UPDATE: I have scanned again and have got two new errors, of which I am not sure about.

 

Caused by: java.io.EOFException: SSL peer shut down incorrectly

Caused by: javax.net.ssl.SSLHandshakeException: Remote host terminated the handshake

 

I have looked at the scan, though I am not sure what exactly I am looking for. (IntelliJ recommended to find the stacktrace so I could link it if necessary).

 

[scientistknight1]

It sounds to me like you're trying to register an item or block in the wrong place. Check to make sure you're handling the registries in the right place.