B4J Question RPI 3B - Can't start application within the service

[EvgenyB4A]

I try to launch my B4J non-ui app as service on Raspberry PI model 3.
The app works fine when I launch it from CLI.
From the service it doesn't launch - the file ServiceError (from systemctl command) is attached.

What maybe the reason?

 

[Erel]

I'm not sure why but the error is incomplete. The app was started and then crashed, but the important information is missing.

 

[EvgenyB4A]

What is the info you need and how to retrieve it?
You can see in the main.java string 28 that app crashes immediately at appstart.
I tried to launch in the service the simple "Hello world" app instead and then service starts succesfully.

 

[EvgenyB4A]

I also launched b4j-bridge as the service and it has been launched successfully.
So, what is the reason may cause to crash my app immediately when launch in the service?

 

[EvgenyB4A]

The problem is solved.
I inserted in myapp.service file the string: WorkingDirectory=home/pi in the section [Service] before ExecStart.
Now the service work fine.