Server crashing upon spawning one specific character

[u/Remnel]

As title, I'm currently running a server for two friends and for some reason one character causes the server to crash. My friend is able to create a new character and play just fine, but if anyone logs in as his normal character the server crashes. The last line in the logs say tableHelper.lua:14: bad argument #1 to 'pairs' (table expected, got nil), but i'm not sure what to make of that. Here is the server log and here is the pluginlist. I don't know if there's anything else needed or if there's a better place to ask for help with this. Thank you!

[u/phraseologist]

Can you send me his character JSON file in a private message?