Appium启动错误BUG解决

raceback (most recent call last):
  File "f:/code/appium-demo.py", line 19, in <module>
    driver = webdriver.Remote('http://localhost:4723/wd/hub', 
desired_caps)
  File "F:\env\python\lib\site-packages\appium\webdriver\webdriver.py", line 257, in __init__
    super().__init__(
  File "F:\env\python\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 209, in __init__
    self.start_session(capabilities)
  File "F:\env\python\lib\site-packages\appium\webdriver\webdriver.py", line 346, in start_session
    response = self.execute(RemoteCommand.NEW_SESSION, w3c_caps)
  File "F:\env\python\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 348, in execute
    self.error_handler.check_response(response)
  File "F:\env\python\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 229, in check_response
    raise exception_class(message, screen, stacktrace)        
selenium.common.exceptions.WebDriverException: Message: An unknown server-side error occurred while processing the command. 
Original error: Error executing adbExec. Original error: 'Command 'F:\\env\\Android-SDK\\platform-tools\\adb.exe -P 5037 -s 
4e97f0a5 shell settings delete global hidden_api_policy_pre_p_apps' exited with code 255'; Stderr: 'Security exception: Permission denial: writing to settings requires:android.permission.WRITE_SECURE_SETTINGS

java.lang.SecurityException: Permission denial: writing to settings requires:android.permission.WRITE_SECURE_SETTINGS       
        at com.android.providers.settings.SettingsProvider.enforceWritePermission(SettingsProvider.java:1815)
        at com.android.providers.settings.SettingsProvider.mutateGlobalSetting(SettingsProvider.java:1023)
        at com.android.providers.settings.SettingsProvider.deleteGlobalSetting(SettingsProvider.java:1006)
        at com.android.providers.settings.SettingsProvider.delete(SettingsProvider.java:592)
        at android.content.ContentProvider$Transport.delete(ContentProvider.java:343)
        at com.android.providers.settings.SettingsService$MyShellCommand.deleteForUser(SettingsService.java:406)
        at com.android.providers.settings.SettingsService$MyShellCommand.onCommand(SettingsService.java:289)
        at android.os.ShellCommand.exec(ShellCommand.java:103)        at com.android.providers.settings.SettingsService.onShellCommand(SettingsService.java:51)
        at android.os.Binder.shellCommand(Binder.java:634)    
        at android.os.Binder.onTransact(Binder.java:532)      
        at android.os.Binder.execTransact(Binder.java:735)'; Code: '255'
Stacktrace:
UnknownError: An unknown server-side error occurred while processing the command. Original error: Error executing adbExec. Original error: 'Command 'F:\\env\\Android-SDK\\platform-tools\\adb.exe -P 5037 -s 4e97f0a5 shell settings delete global hidden_api_policy_pre_p_apps' exited with code 255'; Stderr: 'Security exception: Permission denial: writing to settings requires:android.permission.WRITE_SECURE_SETTINGS

java.lang.SecurityException: Permission denial: writing to settings requires:android.permission.WRITE_SECURE_SETTINGS       
        at com.android.providers.settings.SettingsProvider.enforceWritePermission(SettingsProvider.java:1815)
        at com.android.providers.settings.SettingsProvider.mutateGlobalSetting(SettingsProvider.java:1023)
        at com.android.providers.settings.SettingsProvider.deleteGlobalSetting(SettingsProvider.java:1006)
        at com.android.providers.settings.SettingsProvider.delete(SettingsProvider.java:592)
        at android.content.ContentProvider$Transport.delete(ContentProvider.java:343)
        at com.android.providers.settings.SettingsService$MyShellCommand.deleteForUser(SettingsService.java:406)
        at com.android.providers.settings.SettingsService$MyShellCommand.onCommand(SettingsService.java:289)
        at android.os.ShellCommand.exec(ShellCommand.java:103)        at com.android.providers.settings.SettingsService.onShellCommand(SettingsService.java:51)
        at android.os.Binder.shellCommand(Binder.java:634)
        at android.os.Binder.onTransact(Binder.java:532)
        at android.os.Binder.execTransact(Binder.java:735)'; Code: '255'
    at getResponseForW3CError (F:\Appium\resources\app\node_modules\appium\node_modules\appium-base-driver\lib\protocol\errors.js:804:9)
    at asyncHandler (F:\Appium\resources\app\node_modules\appium\node_modules\appium-base-driver\lib\protocol\protocol.js:388:37)
    at process._tickCallback (internal/process/next_tick.js:68:7)

解决方案

Appium用管理员身份启动

修改USB调试权限