I was trying to set up a server, but everytime I choose a quest or close the questbook I get thrown of the server with the message "A fatal error has occured, the connection is terminated". I have the ServerSnyc confic option enabled and am using the version HQM-1.12.x-5.3.5 (the newest version I could find).
This is the error message I found in the server console:
Error Message.txt

Because of the line "The string is too long for this encoding." it reminds me of #398

Yeah, this issue has been fixed and will be in the next release of HQM, hopefully sometime this month.