[Help] Server crashed

Hello everyone,

I came back home and I found the server had stopped. I turned it on at 3am and came back home around 3pm and saw this:

Error running system event handling function for resource customchat: citizen:/scripting/lua/scheduler.lua:41: Failed to execute thread: chat_server.lua:20: attempt to concatenate a nil value stack traceback: chat_server.lua:20: in upvalue ‘handler’ citizen:/scripting/lua/scheduler.lua:175: in function citizen:/scripting/lua/scheduler.lua:174 stack traceback: [C]: in function ‘error’ citizen:/scripting/lua/scheduler.lua:41: in field ‘CreateThreadNow’ citizen:/scripting/lua/scheduler.lua:174: in function citizen:/scripting/lua/scheduler.lua:138

-Ralf