name 'web_loop_element_index' is not defined

 name 'web_loop_element_index' is not defined
Traceback (most recent call last):
File "C:\Program Files (x86)\ShadowBot\shadowbot-5.13.33\python\lib\runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "C:\Program Files (x86)\ShadowBot\shadowbot-5.13.33\python\lib\runpy.py", line 85, in _run_code
exec(code, run_globals)
File "C:\Program Files (x86)\ShadowBot\shadowbot-5.13.33\python\lib\site-packages\xbot_interpreter.py", line 94, in <module>
main()
File "C:\Program Files (x86)\ShadowBot\shadowbot-5.13.33\python\lib\site-packages\xbot_interpreter.py", line 53, in main
try:
File "C:\Users\苏苏\AppData\Local\ShadowBot\users\581010574765772800\apps\af4fd45d-23da-4259-99a0-5dbc9b960e18\xbot_robot\main.py", line 33, in main
xbot_visual.programing.databook.write_data_to_workbook(write_range="area", write_way="append", write_column_way="override", row_num=当前循环行号, column_name=lambda: web_loop_element_index+1, begin_row_num="1", begin_column_name="", content=SKU单价1, _block=("main", 13, "写入内容至数据表格"))
File "<string>", line 89, in wrapper
File "<string>", line 81, in wrapper
File "C:\Users\苏苏\AppData\Local\ShadowBot\users\581010574765772800\apps\af4fd45d-23da-4259-99a0-5dbc9b960e18\xbot_robot\main.py", line 33, in <lambda>
xbot_visual.programing.databook.write_data_to_workbook(write_range="area", write_way="append", write_column_way="override", row_num=当前循环行号, column_name=lambda: web_loop_element_index+1, begin_row_num="1", begin_column_name="", content=SKU单价1, _block=("main", 13, "写入内容至数据表格"))
NameError: name 'web_loop_element_index' is not defined