Hammerhead non free firmware

About two weeks ago I installed pm without too much problem on Nexus 5.

But now pmbootstrap install is failing with "ERROR: Command failed (exit code 1): apk add -u --virtual .pmbootstrap postmarketos-base device-lg-hammerhead postmarketos-ui-console device-lg-hammerhead-nonfree-firmware ........." ( The add list is very long).

When I don't select the nonfree-firmware option in pmbootstrap init, the image seems to be built without the error. I've tried pull, status, zap and even completely reinstalling ubuntu to no avail. Has something changed somewhere?