IF图像存在，else指令提示“ invalid syntax”

看着缩进都是正确的 T_T

错误提示如下：

invalid syntax

Traceback (most recent call last):

 File "D:\Program Files (x86)\ShadowBot\shadowbot-5.14.38\python\lib\runpy.py", line 193, in _run_module_as_main

   "__main__", mod_spec)

 File "D:\Program Files (x86)\ShadowBot\shadowbot-5.14.38\python\lib\runpy.py", line 85, in _run_code

   exec(code, run_globals)

 File "D:\Program Files (x86)\ShadowBot\shadowbot-5.14.38\python\lib\site-packages\xbot_interpreter.py", line 97, in <module>

   main()

 File "D:\Program Files (x86)\ShadowBot\shadowbot-5.14.38\python\lib\site-packages\xbot_interpreter.py", line 53, in main

   mod = importlib.import_module(robot_inputs['mod'])

 File "D:\Program Files (x86)\ShadowBot\shadowbot-5.14.38\python\lib\importlib\__init__.py", line 127, in import_module

   return _bootstrap._gcd_import(name[level:], package, level)

 File "<frozen importlib._bootstrap>", line 1006, in _gcd_import

 File "<frozen importlib._bootstrap>", line 983, in _find_and_load

 File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked

 File "<frozen importlib._bootstrap>", line 677, in _load_unlocked

 File "<frozen importlib._bootstrap_external>", line 724, in exec_module

 File "<frozen importlib._bootstrap_external>", line 860, in get_code

 File "<frozen importlib._bootstrap_external>", line 791, in source_to_code

 File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed

 File "C:\Users\PC\AppData\Local\ShadowBot\users\118928305501323265\apps\8474c0f8-446f-4ad8-a81f-da1bdae7ef52\xbot_robot\main.py", line 264

   else:

      ^

SyntaxError: invalid syntax