Nicolas wrote: Have you tried duplicating your component and trying out the new one?
I did it and as well I did better then this. I used the sample "hello my world" given as an exemple.
AND, I am facing the same issue.
Good morning,
RUN IN SAND BOX 3.9 is stuck 
. I run it all this night, and this morning it is still stuck on the second line trying to Uninstall component. WHY ?

I even load the sample "hello my world" to check if it was not my project issue : SAME ISSUE

I tried to load as well my old project (more then 2 years) : SAME ISSUE
Can you give me an advise if I did something bad ?
PLEASE HELP TO REPAIR 3.9 SAND BOX : THANK YOU
Have a good day.
Regards