I need help with this error that keeps occuring. LUA error

: [ 144516] citizen:/scripting/lua/scheduler.lua:41: in field ‘CreateThreadNow’
[ 144516] citizen:/scripting/lua/scheduler.lua:174: in function citizen:/scripting/lua/scheduler.lua:138
[ 152422] Error running system event handling function for resource LockDoors: citizen:/scripting/lua/scheduler.lua:41: Failed to execute thread: server.lua:17: attempt to call a nil value (method ‘Split’)
[ 152422] stack traceback:
[ 152422] server.lua:17: in function ‘stringSplit’
[ 152422] server.lua:6: in upvalue ‘handler’
[ 152422] citizen:/scripting/lua/scheduler.lua:175: in function citizen:/scripting/lua/scheduler.lua:174
[ 152422] stack traceback:
[ 152422] [C]: in function ‘error’
[ 152422] citizen:/scripting/lua/scheduler.lua:41: in field ‘CreateThreadNow’
[ 152422] citizen:/scripting/lua/scheduler.lua:174: in function citizen:/scripting/lua/scheduler.lua:138
[ 155782] Error running system event handling function for resource LockDoors: citizen:/scripting/lua/scheduler.lua:41: Failed to execute thread: server.lua:17: attempt to call a nil value (method ‘Split’)
[ 155782] stack traceback:
[ 155782] server.lua:17: in function ‘stringSplit’
[ 155782] server.lua:6: in upvalue ‘handler’
[ 155782] citizen:/scripting/lua/scheduler.lua:175: in function citizen:/scripting/lua/scheduler.lua:174
[ 155782] stack traceback:
[ 155782] [C]: in function ‘error’
[ 155782] citizen:/scripting/lua/scheduler.lua:41: in field ‘CreateThreadNow’
[ 155782] citizen:/scripting/lua/scheduler.lua:174: in function citizen:/scripting/lua/scheduler.lua:138
[ 162672] Error running system event handling function for resource LockDoors: citizen:/scripting/lua/scheduler.lua:41: Failed to execute thread: server.lua:17: attempt to call a nil value (method ‘Split’)
[ 162672] stack traceback:
[ 162672] server.lua

We would have to look at your code, but I believe your using the old string Split function, try this:

function stringsplit(inputstr, sep)
    if sep == nil then
        sep = "%s"
    end
    local t={} ; i=1
    for str in string.gmatch(inputstr, "([^"..sep.."]+)") do
        t[i] = str
        i = i + 1
    end
    return t
end

ok thanks for your help but what script do I put it in.
btw I have started a server but I am learning.

[ 162672] Error running system event handling function for resource LockDoors:

LockDoors script it looks like

ok thanks we will try