login error: must not undeclare prefix ?

[YEETTTTTTT]

I'm trying to login but I get this error:

`INFO: Creating new session
INFO: must not undeclare prefix: line 2, column 0
Traceback (most recent call last):
File "/Users/name/opt/anaconda3/lib/python3.9/xml/etree/ElementTree.py", line 1722, in feed
self.parser.Parse(data, False)
xml.parsers.expat.ExpatError: must not undeclare prefix: line 2, column 0

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/Users/name/opt/anaconda3/lib/python3.9/site-packages/src/execution/tabcmd_controller.py", line 43, in run
namespace.func.run_command(namespace)
File "/Users/name/opt/anaconda3/lib/python3.9/site-packages/src/commands/auth/login_command.py", line 25, in run_command
session.create_session(args)
File "/Users/name/opt/anaconda3/lib/python3.9/site-packages/src/commands/auth/session.py", line 237, in create_session
self._create_new_connection()
File "/Users/name/opt/anaconda3/lib/python3.9/site-packages/src/commands/auth/session.py", line 141, in _create_new_connection
self.tableau_server = self._set_connection_options()
File "/Users/name/opt/anaconda3/lib/python3.9/site-packages/src/commands/auth/session.py", line 135, in _set_connection_options
tableau_server = TSC.Server(self.server_url, use_server_version=True, http_options=http_options)
File "/Users/name/opt/anaconda3/lib/python3.9/site-packages/tableauserverclient/server/server.py", line 97, in init
self.use_server_version()
File "/Users/name/opt/anaconda3/lib/python3.9/site-packages/tableauserverclient/server/server.py", line 139, in use_server_version
self.version = self._determine_highest_version()
File "/Users/name/opt/anaconda3/lib/python3.9/site-packages/tableauserverclient/server/server.py", line 129, in _determine_highest_version
version = self.server_info.get().rest_api_version
File "/Users/name/opt/anaconda3/lib/python3.9/site-packages/tableauserverclient/server/endpoint/endpoint.py", line 186, in wrapper
return func(self, *args, **kwargs)
File "/Users/name/opt/anaconda3/lib/python3.9/site-packages/tableauserverclient/server/endpoint/server_info_endpoint.py", line 30, in get
server_info = ServerInfoItem.from_response(server_response.content, self.parent_srv.namespace)
File "/Users/name/opt/anaconda3/lib/python3.9/site-packages/tableauserverclient/models/server_info_item.py", line 35, in from_response
parsed_response = fromstring(resp)
File "/Users/name/opt/anaconda3/lib/python3.9/site-packages/defusedxml/common.py", line 126, in fromstring
parser.feed(text)
File "/Users/name/opt/anaconda3/lib/python3.9/xml/etree/ElementTree.py", line 1724, in feed
self._raiseerror(v)
File "/Users/name/opt/anaconda3/lib/python3.9/xml/etree/ElementTree.py", line 1631, in _raiseerror
raise err
xml.etree.ElementTree.ParseError: must not undeclare prefix: line 2, column 0`

I do not really understand the error - how can I resolve it?

[jacalata]

Do you know what version of Tableau Server you are running against?

[jacalata]

If you're still seeing this, try visiting your-server-name/api/3.16/serverInfo in a browser, and share what you see on that page.

[jacalata]

I'm going to close this as I can't reproduce it, and haven't heard back. Hopefully it was fixed by improvements since then.