Appium Unknown server-side error occurred - did not start application - automation

Question

I am trying to test a mobile app in appium but its throwing the following error
org.openqa.selenium.WebDriverException: An unknown server-side error occurred while processing the command.
Original error: Cannot start the 'com.example.abc' application.
Original error: 'com.example.abc.ui.splash.SplashActivity' or 'com.example.abc.ui.splash.SplashActivity' never started.
Visit https://github.com/appium/appium/blob/master/docs/en/writing-running-appium/android/activity-startup.md for troubleshooting
(WARNING: The server did not provide any stacktrace information)
Follwing are my capabilities setup
#Before
public void setUp() {
File f = new File( "src" );
//App Name
File fs = new File( f, "app-sandbox-debug.apk" );
DesiredCapabilities capabilities = new DesiredCapabilities();
capabilities.setCapability( "deviceName", "Samsung SM-A305F/DS Android 10, API 29" );
capabilities.setCapability( "platformName", "Android" );
capabilities.setCapability( CapabilityType.BROWSER_NAME, "Android" );
capabilities.setCapability("normalizeTagNames","true");
capabilities.setCapability( MobileCapabilityType.APP, fs.getAbsolutePath() );
try {
driver = new AndroidDriver<MobileElement>( new URL( "http://127.0.0.1:4723/wd/hub" ), capabilities );
driver.manage().timeouts().implicitlyWait( 1000, TimeUnit.SECONDS );
System.out.println("Application running");
} catch (MalformedURLException e) {
e.printStackTrace();
}
}
I am unable to find the error cause nor unable to find what's missing at my end.

Answer 1

You can use adb shell dumpsys window windows command to see the launch activity
Launch the app on the device
connect the device to PC/Laptop with adb enabled
In terminal enter the following command adb shell "dumpsys window windows | grep -E 'mCurrentFocus|mFocusedApp'"
Use the correct activity which can be launched properly