报错信息：
Traceback (most recent call last): File "update_servers.py", line 17, in <module> 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 "PyInstaller\loader\pyimod03_importers.py", line 495, in exec_module File "update_tool\qflash_upgrade.py", line 9, in <module> 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 "PyInstaller\loader\pyimod03_importers.py", line 495, in exec_module File "update_tool\Upgrade.py", line 10, in <module> 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 "PyInstaller\loader\pyimod03_importers.py", line 495, in exec_module File "update_tool\QFlashHandle.py", line 15, in <module> 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 "PyInstaller\loader\pyimod03_importers.py", line 495, in exec_module File "pyautogui\__init__.py", line 183, in <module> 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 "PyInstaller\loader\pyimod03_importers.py", line 495, in exec_module File "pyscreeze\__init__.py", line 45, in <module> 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 "PyInstaller\loader\pyimod03_importers.py", line 495, in exec_module File "cv2\__init__.py", line 181, in <module> File "cv2\__init__.py", line 111, in bootstrap File "cv2\__init__.py", line 106, in load_first_config File "cv2\load_config_py3.py", line 8, in exec_file_wrapper UnicodeDecodeError: 'gbk' codec can't decode byte 0xb9 in position 27: illegal multibyte sequence [6464] Failed to execute script 'update_servers' due to unhandled exception!
解决方法（可依次尝试）：
1.重装cv2。（这是回答比较多的，多数情况有用）
先pip unintall opencv-python ，再pip intall opencv-python
2.降低cv2版本。
pyinstaller和cv2的版本存在兼容问题。本人用的pyinstaller是4.7(python3.7.2)，cv2是4.7.0.72，结果出错，把cv2版本降低到4.5.1.48再打包，就不报错了。
- update_servers exception unhandled execute serversupdate_servers exception unhandled execute unhandled execution function uniapp ioexception configured unhandled exception vue unhandled execution internals update_servers processing exception unhandled occurred encountered exception execution command execute request cannot server execution pattern方式server unhandled