Continue installation
Message "Nextcloud repo is not available, exiting..."
Server version: Ubuntu 18.04
How did you install the VM? Scripted
Do you use DHCP?
Yes
Is port 80 and/or 443 open?
Yes
sudo bash nextcloud_install_production.sh
curl OK
lshw OK
net-tools OK
Generating locales (this might take a while)...
sv_SE.UTF-8... done
Generation complete.
Generating locales (this might take a while)...
de_AT.UTF-8... done
de_BE.UTF-8... done
de_CH.UTF-8... done
de_DE.UTF-8... done
de_IT.UTF-8... done
de_LI.UTF-8... done
de_LU.UTF-8... done
en_AG.UTF-8... done
en_AU.UTF-8... done
en_BW.UTF-8... done
en_CA.UTF-8... done
en_DK.UTF-8... done
en_GB.UTF-8... done
en_HK.UTF-8... done
en_IE.UTF-8... done
en_IL.UTF-8... done
en_IN.UTF-8... done
en_NG.UTF-8... done
en_NZ.UTF-8... done
en_PH.UTF-8... done
en_SG.UTF-8... done
en_US.UTF-8... done
en_ZA.UTF-8... done
en_ZM.UTF-8... done
en_ZW.UTF-8... done
fr_BE.UTF-8... done
fr_CA.UTF-8... done
fr_CH.UTF-8... done
fr_FR.UTF-8... done
fr_LU.UTF-8... done
ru_RU.UTF-8... done
ru_UA.UTF-8... done
sv_SE.UTF-8... done
Generation complete.
RAM for Nextcloud OK! (65 GB)
CPU for Nextcloud OK! (12)
Do you want to create a new user? ([y]es or [N]o): n
Not adding another user...
Checking server OS and version...
Seems that required repositories are ok.

That's just temporary, I can't reproduce it here.
Which VPS is this? DigitalOcean?
Tested another time, it works. So it's probably some error on the VPS on your side.
Hello,
The ssl certificate had expired this morning.
It's fixed now.
yes it works now, thanks @alexdaums
Most helpful comment
Hello,
The ssl certificate had expired this morning.
It's fixed now.