selenium.common.exceptions.SessionNotCreatedException: Message: A new session could not be created. (Original error: Command failed: adb: failed to install C:\Program Files (x86)\Appium\node_modules\appium\build\settings_apk\settings_apk-debug.apk: Failure [INSTALL_FAILED_ALREADY_EXISTS: Attempt to re-install io.appium.settings without first uninstalling.]
)
发一下你的配置参数吧 是不是配置参数不正确呢
手机里手动卸载 settings_apk-debug.apk 应用，可能包名重复了。