when going on server it says Internal Exceptation: io.netty.handler.codec.DecoderExceptation: com.google.gson.JsonsynataxExption: com.google.gson.stream.malformedjsonexception: Use JasonReader.setLenient(true) to accept malformed JSON at line 1 colum 2

when i go on a server it says Internal Exceptation: io.netty.handler.codec.DecoderExceptation: com.google.gson.JsonsynataxExption: com.google.gson.stream.malformedjsonexception: Use JasonReader.setLenient(true) to accept malformed JSON at line 1 colum 2

What I expected to happen was...:
that it was just a minor one and I could try go on the server again

What actually happened was...:
I could not join any server

Steps to Reproduce:
1. go on minecraft
2. go on a server and wait for it to say: Internal Exceptation: io.netty.handler.codec.DecoderExceptation: com.google.gson.JsonsynataxExption: com.google.gson.stream.malformedjsonexception: Use JasonReader.setLenient(true) to accept malformed JSON at line 1 colum 2
3. if not then repeat