Wrong error message – when permissions are not enough

[RenatasDidysis]

Ubuntu server 24.01 with lastest updates:

1. Command run as user "test":

unoconvert --convert-to 'pdf' '/tmp/PhpWordYhQztH.docx' '/tmp/PhpWordYhQztH.pdf'

2. file /tmp/PhpWordYhQztH.docx - permissions "600"
3. systemd unoconv service - runs as "www-data" user :

[Unit]
Description=unoconv
After=network.target
[Service]
User=www-data
Group=www-data
PIDFile=/run/unoconv.pid
ExecStart=/usr/local/bin/unoserver
ExecStop=/bin/kill -- $MAINPID
TimeoutStopSec=2
WorkingDirectory=/tmp
StandardOutput=file:/var/log/unoconv.output
StandardError=file:/var/log/unoconv.err
SyslogIdentifier=unoconv
RestartSec=10
Restart=always
[Install]
WantedBy=multi-user.target

Incorrect error message: type detection failed

'error' => 'INFO:unoserver:Connecting.
INFO:unoserver:Converting.
Traceback (most recent call last):
  File "/usr/local/bin/unoconvert", line 8, in <module>
    sys.exit(converter_main())
             ^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/dist-packages/unoserver/client.py", line 355, in converter_main
    result = client.convert(
             ^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/dist-packages/unoserver/client.py", line 142, in convert
    result = proxy.convert(
             ^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/xmlrpc/client.py", line 1122, in __call__
    return self.__send(self.__name, args)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/xmlrpc/client.py", line 1461, in __request
    response = self.__transport.request(
               ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/xmlrpc/client.py", line 1166, in request
    return self.single_request(host, handler, request_body, verbose)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/xmlrpc/client.py", line 1182, in single_request
    return self.parse_response(resp)
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/xmlrpc/client.py", line 1351, in parse_response
    return u.close()
           ^^^^^^^^^
  File "/usr/lib/python3.12/xmlrpc/client.py", line 668, in close
    raise Fault(**self._stack[0])
xmlrpc.client.Fault: <Fault 1: \'<class \\\'[unoserver.converter.com](http://unoserver.converter.com/).sun.star.lang.IllegalArgumentException\\\'>:Unsupported URL <file:///tmp/PhpWordYhQztH.docx>: "type detection failed" at ./framework/source/loadenv/loadenv.cxx:189\'