Updating Beta v6 with error

I update Pi-hole version beta v6 as usual and all works fine other than one issue as shown in the image provided. “fatal: unable to access”, any idea what cause this issue.

DNS response time is slow for some reason.

Server: 10.10.10.250
Address: 10.10.10.250#53

Non-authoritative answer:

Name: github.com
Address: 20.248.137.48

Thanks in advance.

[✓] Swapping databases
[✓] The old database remains available
[✓] Cleaning up stray matter

[✓] Done.
fatal: unable to access 'GitHub - pi-hole/pi-hole: A black hole for Internet advertisements': Could not resolve host: github.com
fatal: unable to access 'GitHub - pi-hole/web: Pi-hole Dashboard for stats and more': Could not resolve host: github.com
fatal: unable to access 'GitHub - pi-hole/FTL: The Pi-hole FTL engine': Could not resolve host: github.com

[i] The install log is located at: /etc/pihole/install.log
[✓] Update complete!

Core
Version is v5.18.2-359-gdd2c1c6 (Latest: null)
Branch is development-v6
Hash is dd2c1c69 (Latest: N/A)
Web
Version is v5.19-777-g2d45f6d3 (Latest: null)
Branch is development-v6
Hash is 2d45f6d3 (Latest: N/A)
FTL
Version is vDev-bccfa22 (Latest: null)
Branch is development-v6
Hash is bccfa224 (Latest: N/A)
pi@raspberrypi:~ $ sudo nano /etc/pihole/install.log

That error shows that there is no DNS service active at that time to resolve github.com to it's IP address.

For some reason, the DNS responds very slowly, from to time, and I have yet to figure it out. New to this version of Pihole.

Thanks for replying.

Are you using Pi-hole as it's own DNS server? That's not an ideal setup, there's not really anything that the Pi-hole server itself needs to be blocked from.

What is the /etc/resolv.conf file set up with on the Pi-hole server host?

You think I should remove 127.0.0.1#5335 ?

pi@raspberrypi:~ $ cat /etc/resolv.conf
"# nameserver 8.8.8.8"
pi@raspberrypi:~ $

Are you running unbound?

Is that the exact contents of /etc/resolv.conf? If so it's malformed and very likely why you have no DNS resolution on that Raspberry Pi.

Custom DNS servers

Yes.

100.64.0.4
127.0.0.1#5335

Please be a bit more verbose in your responses, I do not understand what you are trying to say.

Sorry, the problem solved itself.

Please close the ticket.