ionettyhandlercodecDecoderException javaioStreamCorruptedException invalid internal transport message format got 48545450

The error message you provided indicates a DecoderException caused by a StreamCorruptedException. This exception is thrown when the decoder encounters an invalid internal transport message format.

In your case, the message format received by the decoder is not valid. The byte sequence (48, 54, 54, 50) is given as an example of the invalid format.

To resolve this issue, you need to investigate the source of the message and ensure that it is being sent in the correct format expected by the decoder. It's possible that there is a mismatch between the encoding and decoding logic in your code or a problem with the data being received.

You can try debugging the code to identify where the message is being sent and received, and inspect the data before and after the decoding process to better understand the issue