Cannot launch GUI programme in graphic way

[Neboer]

I am using Ubuntu 19.04 and I still can't launch GUI programme in a graphic way. What I get is only the standard output in my terminal.

I saw the above discussion and the problem seems have been solved, but in your last release Release 4.14 the problem still occurs. Please find out a solution and solve it, thank you very much.

I am not a professional developer so it is a bit hard for me to find where the problem lays. Hope you can help me.

btw, the programme is really helpful.