循环删除excel出错

 (-2147352567, '发生意外。', (0, None, None, None, 0, -2146827284), None)
Traceback (most recent call last):
File "C:\Program Files (x86)\ShadowBot\shadowbot-5.5.32\python\lib\runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "C:\Program Files (x86)\ShadowBot\shadowbot-5.5.32\python\lib\runpy.py", line 85, in _run_code
exec(code, run_globals)
File "C:\Program Files (x86)\ShadowBot\shadowbot-5.5.32\python\lib\site-packages\xbot_interpreter.py", line 67, in <module>
main()
File "C:\Program Files (x86)\ShadowBot\shadowbot-5.5.32\python\lib\site-packages\xbot_interpreter.py", line 45, in main
try:
File "C:\Users\Quan Miao\AppData\Local\ShadowBot\users\96847063-06be-44fa-9f75-a4c887d72273\apps\1281ecff-d5d2-464b-90bd-8f9a5085b64b\xbot_robot\process1.py", line 12, in main
xbot_visual.excel.remove_column(workbook=excel_instance, column_name=loop_item, sheet_name="", _block=("子流程1", 4, "删除Excel列"))
File "<string>", line 79, in wrapper
File "<string>", line 74, in wrapper
File "<string>", line 728, in remove_column
File "<string>", line 404, in remove_column
File "<string>", line 606, in column
File "<COMObject <unknown>>", line 3, in Range
pywintypes.com_error: (-2147352567, '发生意外。', (0, None, None, None, 0, -2146827284), None)