Arbil won't start

Since a month I have been using Arbil very frequently. It has a lot of data that I want to keep on working with.
Strangely enough I am not able to open Arbil anymore. I am fearing that my data is somehow lost. Redownloading the installation folder has not helped. My laptop seems somehow not able to process the starting of arbil and automatically closes the icon after a few seconds. I don’t see any screen like I used to.
Is there something I can do?

See https://tla.mpi.nl/topic/i-cant-open-arbil and https://github.com/TheLanguageArchive/Arbil/wiki/HowToRun

See https://tla.mpi.nl/topic/i-cant-open-arbil/#post-13521