My files just disappear

Im getting an error in cmd like this: Error running system event handling function for resource esx_society: citizen:/scripting/lua/scheduler.lua:41: Failed to execute thread: server/main.lua:39: attempt to index a nil value (field ‘?’)
stack traceback:
server/main.lua:39: in upvalue ‘handler’
citizen:/scripting/lua/scheduler.lua:174: in function citizen:/scripting/lua/scheduler.lua:173
stack traceback:
[C]: in function ‘error’
citizen:/scripting/lua/scheduler.lua:41: in field ‘CreateThreadNow’
citizen:/scripting/lua/scheduler.lua:173: in function citizen:/scripting/lua/scheduler.lua:138
hitch warning: frame time of 540 milliseconds

And it’s deleting 4 files… When i try to add same script again it says i have 15 files and 11 in the folder…