The Internal Exception Java.IO.IOException error usually occurs when you launch Minecraft, or when the game is underway. This error can be caused by a number of different things.

Java exception handling with stack traces, exception chaining, try-with-resources, final re-throw, and StackWalker.

java.io.IOException: io.grpc.StatusRuntimeException: UNAVAILABLE: io exception #11341 New issue Closed as not planned Sowmya-Iyer ...

java.io.IOException: Connection reset by peer is a regular exception that the Redis server closed the connection during command sending/receiving. Do you have the full stack trace for me?