Seeing error in Pi-hole diagnosis: `Connection error (9.9.9.9#53):` Full error in body

[Groovee]

Since updating to v6, I've been seeing the following in my Pi-hole diagnosis page:
Connection error (9.9.9.9#53): TCP connection failed while receiving payload length from upstream (Resource temporarily unavailable)

In DNS Settings, I noticed I had set this at some time in the past. I unchecked those and saved; however, all resolution failed. I use a UniFi Dream Machine SE as my security gateway and do not have any other DNS IPs except my pi-hole IP. I'm not concerned with this error just curious what I'm doing wrong or need to change in my settings page to get it to go away.

I can provide a token if that would help.

[jfb]

@Groovee

I can provide a token if that would help.

This is requested in our help template. Please provide.

And, have you tried other upstream DNS servers in Pi-hole?

[Groovee]

Thank you for the response. I saw it in the template and was hopeful this was a quick fix and did not need one. Apologies on my laziness! Will remember for next time.

Token: https://tricorder.pi-hole.net/MUGlR2wK/

And, have you tried other upstream DNS servers in Pi-hole?

I have not. Is that something I change in the GUI or via CLI? Edit: Just updated in the GUI.

[Groovee]

I'm now seeing this error:

Looked at the documentation but didn't see much information on the error.

[rdwebdesign]

Please upload a new debug log and post just the token URL that is generated after the log is uploaded by running the following command from the Pi-hole host terminal:

pihole -d

[Groovee]

Seeing this:

`[?] Would you like to upload the log? [y/N] y
* Using curl for transmission.
* curl failed, contact Pi-hole support for assistance.
* Error message: curl: (22) The requested URL returned error: 400

[✗] There was an error uploading your debug log.

• Please try again or contact the Pi-hole team for assistance.`

[Groovee]

Finally got it to re-run:

https://tricorder.pi-hole.net/OLTcgKiR/