(Android)An unknown server-side error occurred while processing the command. Original error: You must include a platformName capability

This is my capability!please do me a favor!i do not kown how to fix it !

{‘platformName’: ‘Android’,
‘platformVersion’: ‘9’,
‘deviceName’: ‘8CY4C19506004954’,
‘appPackage’: ‘com.zhiyong.japanese.word’,
‘appActivity’: ‘com.binbinfun.cookbook.MainActivity’,
‘unicodeKeyboard’: True,
‘resetKeyboard’: True}

Include “platformName”, “Android” in your capabilities.