error "3 is not a valid EntranceType" while taking picture with the GUI

[luiscnr]

@corizzi
When trying to take a picture with the GUI, there is an error: "3 is not a valid EntranceType". However, the picture is taken and saved in DATA.

At the end we took the picture using:
$ python -m hypernets.hypstar.handler -p

[stiebrs]

Hi. I've fixed it in my fork. Once it's tested, I'll do a PR