ChromeOptions chromeOptions = new ChromeOptions();
        chromeOptions.setUseRunningAndroidApp(true);
        chromeOptions.setExperimentalOption("androidDeviceSerial","emulator-5554");
        chromeOptions.setAndroidPackage(appPackage);
        chromeOptions.setAndroidProcess(appPackage);
        chromeOptions.setExperimentalOption("w3c", true);
        cap.setCapability(ChromeOptions.CAPABILITY,chromeOptions);

[Chromedriver@feb8] connect ECONNREFUSED 127.0.0.1:54768
[Chromedriver@feb8] Starting W3C Chromedriver session with capabilities: {
[Chromedriver@feb8]   "capabilities": {
[Chromedriver@feb8]     "alwaysMatch": {
[Chromedriver@feb8]       "goog:chromeOptions": {
[Chromedriver@feb8]         "androidPackage": "com.typology.app.preview",
[Chromedriver@feb8]         "androidDeviceSerial": "",
[Chromedriver@feb8]         "androidProcess": "com.typology.app.preview",
[Chromedriver@feb8]         "androidUseRunningApp": true,
[Chromedriver@feb8]         "args": [],
[Chromedriver@feb8]         "extensions": [],
[Chromedriver@feb8]         "w3c": true
[Chromedriver@feb8]       },
[Chromedriver@feb8]       "goog:loggingPrefs": {
[Chromedriver@feb8]         "browser": "ALL"
[Chromedriver@feb8]       }
[Chromedriver@feb8]     }
[Chromedriver@feb8]   }
[Chromedriver@feb8] }
[Chromedriver@feb8] Got response with status 400: {"value":{"error":"invalid argument","message":"invalid argument: cannot parse capability: goog:chromeOptions\nfrom invalid argument: cannot parse androidDeviceSerial\nfrom invalid argument: cannot be empty","stacktrace":"Backtrace:\n\tGetHandleVerifier [0x004B8893+48451]\n\t(No symbol) [0x0044B8A1]\n\t(No symbol) [0x00355058]\n\t(No symbol) [0x0036A94A]\n\t(No symbol) [0x0036F08E]\n\t(No symbol) [0x0036CD14]\n\t(No symbol) [0x0036F8D0]\n\t(No symbol) [0x0036A4DB]\n\t(No symbol) [0x0039F831]\n\t(No symbol) [0x0039F4E8]\n\t(No symbol) [0x003A0620]\n\t(No symbol) [0x003A047C]\n\t(No symbol) [0x0039A0B6]\n\t(No symbol) [0x00377E08]\n\t(No symbol) [0x00378F2D]\n\tGetHandleVerifier [0x00718E3A+2540266]\n\tGetHandleVerifier [0x00758959+2801161]\n\tGetHandleVerifier [0x0075295C+2776588]\n\tGetHandleVerifier [0x00542280+612144]\n\t(No symbol) [0x00454F6C]\n\t(No symbol) [0x004511D8]\n\t(No symbol) [0x004512BB]\n\t(No symbol) [0x00444857]\n\tBaseThreadInitThunk [0x75DB7BA9+25]\n\tRtlInitializeExceptionChain [0x775D...
[Chromedriver@feb8] Chromedriver exited unexpectedly with code null, signal SIGTERM
[Chromedriver@feb8] invalid argument: cannot parse capability: goog:chromeOptions
[Chromedriver@feb8] from invalid argument: cannot parse androidDeviceSerial
[Chromedriver@feb8] from invalid argument: cannot be empty
[AndroidUiautomator2Driver@8970 (81ee865a)] Restoring hidden api policy to the device default configuration
[HTTP] <-- POST /wd/hub/session 500 6636 ms - 882
[HTTP] 

org.openqa.selenium.SessionNotCreatedException: Could not start a new session. Response code 500. Message: An unknown server-side error occurred while processing the command. Original error: invalid argument: cannot parse capability: goog:chromeOptions
from invalid argument: cannot parse androidDeviceSerial
from invalid argument: cannot be empty 



{"androidPackage":"com.android.chrome","androidDeviceSerial":"emulator-5554","androidProcess":"com.typology.app.preview","androidUseRunningApp":true,"args":[],"extensions":[],"w3c":true}