What to do if nixos stay blocked after Starting systemd

I start nixos from wsl. Sometime after the start, it get blocked I get these lines and nothing happends after that

Copying /usr/share/applications
Copying /usr/share/icons
setting up /etc...
setting up /bin...
Starting systemd...

Solution

It doesn't answer why nixos is blocked but it solves the problem.

open a new terminal. And then enter that:

 wsl --shutdown

and

wsl

repeat as long as necessary