Could not connect to the playwright process in WSL environment

Hi there!
I have WSL2 environment with Ubuntu 20.04. Somehow not been able to set it up for running tests. :sweat:
Have followed the instructions: Browser Library (
rfbrowser init output is: rfbrowser init completed
there are though some cert error messages like Error: certificate is not yet valid at TLSSocket.onConnectSecur
but I doubt there are not an issue here.
I can see the ports and processes in VSCode see here:

If anyone has some idea, thanks for your comment! The workaround is to use Windows but this bothers me a bit if I can’t run test on WSL.

So here is the error
[ ERROR ] Calling method ‘_start_suite’ of listener ‘Browser’ failed: Could not connect to the playwright process at port XXXXX.