LowLevelFatalError [File:Unknown] [Line: 302] in CARLA 0.9.11

I’am having this error message when i’m trying to run Carla in the pre-packed version 0.9.11.

LowLevelFatalError [File:Unknown] [Line: 302]
Waiting for PSO creation failed to complete within the timeout interval (2000.000 ms).

I have in parralel Carla 0.9.10 which runs very well. So i don’t know what is the source of this error message.

Anyone has encountred this kind of error message ?

Thanks in advance for the replies