Launcher won't let me delete / edit and installation.

I decided to play 1.12.2 with mods and installed forge and all. When i was done i wanted to delete the profile/version on the launcher, but suddenly i can't delete or edit the installation.

 I can't add a picture because it says "Jira could not attach the file as there was a missing token. Please try attaching the file again." I tried 10 times now.