<unknown>.ActiveSheet这个指令报错的原因是啥

 <unknown>.ActiveSheet
Traceback (most recent call last):
File "D:\Program Files (x86)\ShadowBot\shadowbot-5.10.15\python\lib\runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "D:\Program Files (x86)\ShadowBot\shadowbot-5.10.15\python\lib\runpy.py", line 85, in _run_code
exec(code, run_globals)
File "D:\Program Files (x86)\ShadowBot\shadowbot-5.10.15\python\lib\site-packages\xbot_interpreter.py", line 87, in <module>
main()
File "D:\Program Files (x86)\ShadowBot\shadowbot-5.10.15\python\lib\site-packages\xbot_interpreter.py", line 47, in main
try:
File "C:\Users\admin\AppData\Local\ShadowBot\users\3545e156-90ac-4ccd-aa41-3e5f027e7c40\apps\58294326-18e5-4051-b738-5ddeaa44f372\xbot_robot\main.py", line 49, in main
xbot_visual.excel.remove_row(workbook=excel_instance, index="-1", sheet_name="", _block=("main", 32, "删除Excel行"))
File "<string>", line 89, in wrapper
File "<string>", line 84, in wrapper
File "<string>", line 171, in remove_row
File "<string>", line 1341, in _get_sheet
File "<string>", line 162, in get_active_sheet
File "D:\Program Files (x86)\ShadowBot\shadowbot-5.10.15\python\lib\site-packages\win32com\client\dynamic.py", line 527, in __getattr__
raise AttributeError("%s.%s" % (self._username_, attr))
AttributeError: <unknown>.ActiveSheet