使用验证码过程中 填写了图鉴用户名US、密码xxxx、执行流过程时报错：变量 "US" 未被定义，无法使用

使用验证码过程中 填写了图鉴用户名US、密码xxxx、执行流过程时报错：变量 "US" 未被定义，无法使用

Traceback (most recent call last):
File "C:\zdh\shadowbot-5.10.15\python\lib\runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "C:\zdh\shadowbot-5.10.15\python\lib\runpy.py", line 85, in _run_code
exec(code, run_globals)
File "C:\zdh\shadowbot-5.10.15\python\lib\site-packages\xbot_interpreter.py", line 87, in <module>
main()
File "C:\zdh\shadowbot-5.10.15\python\lib\site-packages\xbot_interpreter.py", line 47, in main
try:
File "C:\Users\i\AppData\Local\ShadowBot\users\81756408901672961\apps\10b938b8-6255-443a-a294-f2d3647d5516\xbot_robot\main.py", line 28, in main
], _block=("main", 2, "图片旋转验证"))
File "<string>", line 89, in wrapper
File "<string>", line 84, in wrapper
File "<string>", line 66, in run
File "C:\Users\i\AppData\Local\ShadowBot\users\817564089016729621\apps\10b9388b8-6255-443a-a294-f2d3647d5516\xbot_robot\main.py", line 24, in <lambda>
"图鉴账号": lambda: US,
NameError: name 'US' is not defined