组件加延时报错

组件加延时报如下的错误：
Traceback (most recent call last):
File “C:\iS-RPA\studio-v6\project\CheckWorkParmas\codes\Main.py”, line 2129, in
pro.Main()
File “C:\iS-RPA\studio-v6\project\CheckWorkParmas\codes\Main.py”, line 2108, in Main
self.up_excel(parmas=tvar22145307989140)
File “C:\iS-RPA\studio-v6\project\CheckWorkParmas\codes\Main.py”, line 2031, in up_excel
time.sleep(1)
UnboundLocalError: local variable ‘time’ referenced before assignment

这个是什么原因？？？