Hi, yeah, you have a hidden Wifi network in range and we had a bug with them (see bug# 35941).
It has since been fixed--but there was no new Guix release yet. If possible, can you move out of range of the hidden Wifi to install (just to install) Guix? If not, I can build a new installation iso for you to use.
pgpwzsCf74tRF.pgp
Description: OpenPGP digital signature
