Some accounts cannot log in normally

[ShermanYawa]

Why do I use this on-hook software to enter the server with some accounts, and some accounts can not enter at first, but after a period of time, it will display: EncoderException : java.lang.NullPointerException @ io.netty.handler.codec.MessageToByteEncoder:125

[Defective4]

Do you experience this issue on all servers you try to enter or only on a specific one?

[Defective4]

Closing, because there is lack of information regarding this issue.

[Hyphonical]

Im having the same issue when i connect with my alt account (Mojang) to any server I either get: or:

[Defective4]

Closing as Mojang authentication is no longer supported and it's waiting for removal. (#24)