Mushclient报错求助

whit

Error raised in timer function (in wait module).
stack traceback:
        [C]: in function 'Execute'
        [string "Script file"]:43: in function <[string "Script file"]:40>
Run-time error
World:  
Function/Sub: wait.timer_resume called by timer
Reason: 正在处理定时器 "wait_timer_8076"
C:\Program Files (x86)\MUSHclient\lua\wait.lua:51: [string "Script file"]:43: bad argument #1 to 'Execute' (string expected, got nil)
stack traceback:
        [C]: in function 'error'
        C:\Program Files (x86)\MUSHclient\lua\wait.lua:51: in function