Currently, I get two different(!) urllib errors for my two devices

[Wikinaut]

Hi, after some years, I came back to your software, but unfortunately I got these error messages now:
(running the lastest version d7cd5b0 )

Perhaps you have an idea, how to overcome or to identify the probems.

MFC-9342CDW

/oh-brother.py 192.168.xxx.xxx
You may need to check the following in the printer's configuration:
  - SNMP service is enabled (for fetching model and versions)
Press Ctrl-C to exit or Enter to continue...
Getting SNMP data from printer at 192.168.xxx.xxx
done

    serial = xxxxx
     model = MFC-9342CDW
      spec = 0503
   firmwares
    category = MAIN, version = P1811191522:CE45
    category = SUB1, version = 1.05
    category = SUB2, version = Q1811192000


Updating MAIN version P1811191522:CE45
Looking up printer firmware info at vendor server...
Traceback (most recent call last):
  File "/home/benutzer/projekte/Brother Firmwareupdater/oh-brother/./oh-brother.py", line 296, in <module>
    update_firmware(entry['cat'], entry['version'])
  File "/home/benutzer/projekte/Brother Firmwareupdater/oh-brother/./oh-brother.py", line 213, in update_firmware
    response = urllib.request.urlopen(req)
  File "/usr/lib/python3.10/urllib/request.py", line 216, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/lib/python3.10/urllib/request.py", line 525, in open
    response = meth(req, response)
  File "/usr/lib/python3.10/urllib/request.py", line 634, in http_response
    response = self.parent.error(
  File "/usr/lib/python3.10/urllib/request.py", line 563, in error
    return self._call_chain(*args)
  File "/usr/lib/python3.10/urllib/request.py", line 496, in _call_chain
    result = func(*args)
  File "/usr/lib/python3.10/urllib/request.py", line 643, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 504: Gateway Time-out

ADS-2600We

./oh-brother.py 192.168.xxx.yyy
You may need to check the following in the printer's configuration:
  - SNMP service is enabled (for fetching model and versions)
Press Ctrl-C to exit or Enter to continue...
Getting SNMP data from printer at 192.168.xxx.yyy
done

    serial = yyyyy
     model = ADS-2600We
      spec = 0103
   firmwares
    category = MAIN, version = J1812251155:885A
    category = SUB2, version = D16082214


Updating MAIN version J1812251155:885A
Looking up printer firmware info at vendor server...
Traceback (most recent call last):
  File "/home/benutzer/projekte/Brother Firmwareupdater/oh-brother/./oh-brother.py", line 296, in <module>
    update_firmware(entry['cat'], entry['version'])
  File "/home/benutzer/projekte/Brother Firmwareupdater/oh-brother/./oh-brother.py", line 213, in update_firmware
    response = urllib.request.urlopen(req)
  File "/usr/lib/python3.10/urllib/request.py", line 216, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/lib/python3.10/urllib/request.py", line 525, in open
    response = meth(req, response)
  File "/usr/lib/python3.10/urllib/request.py", line 634, in http_response
    response = self.parent.error(
  File "/usr/lib/python3.10/urllib/request.py", line 563, in error
    return self._call_chain(*args)
  File "/usr/lib/python3.10/urllib/request.py", line 496, in _call_chain
    result = func(*args)
  File "/usr/lib/python3.10/urllib/request.py", line 643, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 503: Service Unavailable