502 error on Voyager 2a, no physical access to device

Hello,

I have a Voyager 2a running Tinypilot version 2.6.3 that is giving me the "TinyPilot is not Running" browser page.

My logfile upload can be found at https://logs.tinypilotkvm.com/Bh2nJXvX

I set up this device at my home office last week, and it was working fine, including remote access to it via Tailscale from several different locations. I shipped it to a remote office and they plugged it in today, and I've been unable to connect to the graphical interface.

Some additional details:

• There is no computer connected to it currently, only ethernet and power.
• I'm connecting via Tailscale VPN, which indicates that the device is online and available.
• I can successfully SSH to the device.
• The device is about a thousand miles away from me, and the on-site staff needed facetime assistance just plugging it into power, so I can't do anything to the box that requires physical access to it.
• From the logfiles and from the output of sudo service tinypilot restart it appears that the tinypilot service is in a restart loop, bouncing about once per second.
• I have rebooted the device both via sudo reboot and by having an on-site user physically disconnect and reconnect power to the box.

I'm not sure if this is relevant, but I notice in the logs, just before each restart of the tinypilot service, I see the following few lines:

Apr 24 20:39:38 tinypilot python[1410]:   File "/opt/tinypilot/venv/lib/python3.9/site-packages/dns/version.py", line 2
Apr 24 20:39:38 tinypilot python[1410]:     else:
Apr 24 20:39:38 tinypilot python[1410]: IndentationError: unexpected indent
Apr 24 20:39:38 tinypilot systemd[1]: tinypilot.service: Main process exited, code=exited, status=1/FAILURE
Apr 24 20:39:38 tinypilot systemd[1]: tinypilot.service: Failed with result 'exit-code'.
Apr 24 20:39:39 tinypilot systemd[1]: tinypilot.service: Scheduled restart job, restart counter is at 234.
Apr 24 20:39:39 tinypilot systemd[1]: Stopped TinyPilot - RPi-based virtual KVM.

That IndentationError: unexpected indent is a little odd, so here are the entire contents of the file it mentions in the Traceback:

ns.xfr.make_query(txn_manager)
    else:
        serial = dns.xfr.extract_serial_from_query(query)
    rdtype = query.question[0].rdtype
    is_ixfr = rdtype == dns.rdatatype.IXFR
    origin = txn_manager.from_wire_origin()
    wire = query.to.wire()
    af = dns.inet.af_for_address(where)
    stuple = source_tuple(af, source, source_port)
    dtuple = (where, port)
    (_, expiration) = _compute_times(lifetime)
    retry = True

Line 2 has the indented else: command - I'm not too savvy about Python, but shouldn't we expect that to have a preceding if or elif somewhere?

Here's more:

$ source /opt/tinypilot/venv/bin/activate
$ pip list | grep dns
dnspython          2.4.1
$ pip show dnspython
Name: dnspython
Version: 2.4.1
...
Location: /opt/tinypilot/venv/lib/python3.9/site-packages

Looking at the github repository for dnspython, that definitely doesn't look like their version.py file that I have here... would it be worth reinstalling this particular library with something like this?

pip install --force-reinstall dnspython==2.4.1

FWIW, the only changes I have so far made to the host were when I still had it with me, and those changes were (1) using the GUI to update to the latest version of TinyPilot, and (2) installing and configuring Tailscale.

Please advise. As I'm unable to lay hands on the box, I need to avoid a factory reset - I shudder at the thought of trying to walk my non-technical users through the setup and usage of Etcher and the reconfiguration of Tailscale.