Hi,
After reinstalling AppServer 2-3 times, I figured out that my WebApp itself was the problem. I was trying to use a Singleton
pattern in one of the class (dealing with backend connection) and apparently that was crashing the server (which I found funny), because when I made that class non-Singleton type, my webapp started working properly, without crashing the server.
I just thought I'd come back here and post about it.
Have a nice day.