Thank you for your help Axel! unfortunately it stays blocked on this screen. I am not able to reach preferences and the result is the same with alt shift to reset performances. I did not get any error message.
OS: Monterey 12.0.1
lightroom 11.1 (to mention that when I reinstall v10 it starts correctly. i had this problem since v11.0 in november and now with v11.1)