Installer error with nixos 22.05

I am trying to install the new nixos v22.05 using the graphical installation. However, it seems to be stuck at 46% for more than 30 mins. Is this normal? Also I get this from the log

=== START CALAMARES 3.2.57

2022-06-07 - 10:11:43 [1]: OsproberEntryList PartUtils::runOsprober(DeviceModel*)
    ERROR: os-prober cannot start. 

Is this normal?

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Yes, this is normal.

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Yeah, although definitely bad UX at the moment. I made an update that displays the full nixos-install output log in that window. Hopefully it’ll get backported soon

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