Internal Exception: io.netty handler.codec.DecoderException: com.google.gson.JsonSyntaxException: Expected text to be a string, was ab object ({"fi...t"}) cant join server

hello, i hope anyone reading this is doing fine, i wanted help because i cant enter to my server, and i want to play with my friends, i dont know what to do so i decided to post it here, i hope someone can help, the thing is that every time i try to enter a server, this error appears

Internal Exception: io.netty handler.codec.DecoderException: com.google.gson.JsonSyntaxException: Expected text to be a string, was ab object ({"fi...t"}) cant join server

i really hope someone can help me, i would be really grateful for that

i tried to do it but it just doesnt work