AttributeError: 'NoneType' object has no attribute 'get_document' in Kate text editor

[5ynCity]

I tried to set up LSP for Kate using the install commands provided in the readme. But after installing, the Kate console shows this when loading a script. (In this case it's a completely blank script). Then the last error is repeated with almost every single character typed.

[14:49:23  LSP Client Log] Started server python@/home/cyan: /usr/bin/pylsp --check-parent-process
[14:49:23  LSP Server Log] python@/home/cyan
2024-03-29 14:49:23,119 EDT - WARNING - pylsp.config.config - Failed to load pylsp entry point 'autopep8': No module named 'pycodestyle'
[14:49:23  LSP Server Log] python@/home/cyan
2024-03-29 14:49:23,121 EDT - WARNING - pylsp.config.config - Failed to load pylsp entry point 'pycodestyle': No module named 'pycodestyle'
[14:49:23  LSP Server Log] python@/home/cyan
2024-03-29 14:49:23,121 EDT - WARNING - pylsp.config.config - Failed to load pylsp entry point 'pydocstyle': No module named 'pydocstyle'
2024-03-29 14:49:23,125 EDT - ERROR - pylsp_jsonrpc.endpoint - Failed to handle request 1
Traceback (most recent call last):
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/endpoint.py", line 117, in consume
    self._handle_request(message['id'], message['method'], message.get('params'))
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/endpoint.py", line 197, in _handle_request
    handler_result = handler(params)
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/dispatchers.py", line 25, in handler
    return method(**(params or {}))
  File "/usr/lib/python3/dist-packages/pylsp/python_lsp.py", line 210, in m_initialize
    self.config = config.Config(rootUri, initializationOptions or {},
  File "/usr/lib/python3/dist-packages/pylsp/config/config.py", line 52, in __init__
    entry_point.load()
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2465, in load
    return self.resolve()
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2471, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "/usr/lib/python3/dist-packages/pylsp/plugins/pyflakes_lint.py", line 18, in 
    messages.ContinueInFinally,
AttributeError: module 'pyflakes.messages' has no attribute 'ContinueInFinally'
[14:49:23  LSP Server Log] python@/home/cyan
2024-03-29 14:49:23,140 EDT - ERROR - pylsp_jsonrpc.endpoint - Failed to handle notification initialized: {}
Traceback (most recent call last):
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/endpoint.py", line 146, in _handle_notification
    handler_result = handler(params)
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/dispatchers.py", line 25, in handler
    return method(**(params or {}))
  File "/usr/lib/python3/dist-packages/pylsp/python_lsp.py", line 252, in m_initialized
    self._hook('pylsp_initialized')
  File "/usr/lib/python3/dist-packages/pylsp/python_lsp.py", line 155, in _hook
    hook_handlers = self.config.plugin_manager.subset_hook_caller(hook_name, self.config.disabled_plugins)
AttributeError: 'NoneType' object has no attribute 'plugin_manager'
[14:49:23  LSP Server Log] python@/home/cyan
2024-03-29 14:49:23,141 EDT - ERROR - pylsp_jsonrpc.endpoint - Failed to handle notification textDocument/didOpen: {'textDocument': {'languageId': 'python', 'text': '', 'uri': 'file:///home/cyan/Scripts/auto.py', 'version': 30}}
Traceback (most recent call last):
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/endpoint.py", line 146, in _handle_notification
    handler_result = handler(params)
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/dispatchers.py", line 25, in handler
    return method(**(params or {}))
  File "/usr/lib/python3/dist-packages/pylsp/python_lsp.py", line 326, in m_text_document__did_open
    workspace.put_document(textDocument['uri'], textDocument['text'], version=textDocument.get('version'))
AttributeError: 'NoneType' object has no attribute 'put_document'
2024-03-29 14:49:23,141 EDT - ERROR - pylsp_jsonrpc.endpoint - Failed to handle request 2
Traceback (most recent call last):
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/endpoint.py", line 117, in consume
    self._handle_request(message['id'], message['method'], message.get('params'))
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/endpoint.py", line 197, in _handle_request
    handler_result = handler(params)
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/dispatchers.py", line 25, in handler
    return method(**(params or {}))
  File "/usr/lib/python3/dist-packages/pylsp/python_lsp.py", line 362, in m_text_document__document_symbol
    return self.document_symbols(textDocument['uri'])
  File "/usr/lib/python3/dist-packages/pylsp/python_lsp.py", line 275, in document_symbols
    return flatten(self._hook('pylsp_document_symbols', doc_uri))
  File "/usr/lib/python3/dist-packages/pylsp/python_lsp.py", line 154, in _hook
    doc = workspace.get_document(doc_uri) if doc_uri else None
AttributeError: 'NoneType' object has no attribute 'get_document'
[14:49:23  LSP Server Log] python@/home/cyan
2024-03-29 14:49:23,159 EDT - ERROR - pylsp_jsonrpc.endpoint - Failed to handle request 3
Traceback (most recent call last):
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/endpoint.py", line 117, in consume
    self._handle_request(message['id'], message['method'], message.get('params'))
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/endpoint.py", line 197, in _handle_request
    handler_result = handler(params)
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/dispatchers.py", line 25, in handler
    return method(**(params or {}))
  File "/usr/lib/python3/dist-packages/pylsp/python_lsp.py", line 362, in m_text_document__document_symbol
    return self.document_symbols(textDocument['uri'])
  File "/usr/lib/python3/dist-packages/pylsp/python_lsp.py", line 275, in document_symbols
    return flatten(self._hook('pylsp_document_symbols', doc_uri))
  File "/usr/lib/python3/dist-packages/pylsp/python_lsp.py", line 154, in _hook
    doc = workspace.get_document(doc_uri) if doc_uri else None
AttributeError: 'NoneType' object has no attribute 'get_document'
[14:49:23  LSP Server Log] python@/home/cyan
2024-03-29 14:49:23,175 EDT - ERROR - pylsp_jsonrpc.endpoint - Failed to handle request 4
Traceback (most recent call last):
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/endpoint.py", line 117, in consume
    self._handle_request(message['id'], message['method'], message.get('params'))
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/endpoint.py", line 197, in _handle_request
    handler_result = handler(params)
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/dispatchers.py", line 25, in handler
    return method(**(params or {}))
  File "/usr/lib/python3/dist-packages/pylsp/python_lsp.py", line 362, in m_text_document__document_symbol
    return self.document_symbols(textDocument['uri'])
  File "/usr/lib/python3/dist-packages/pylsp/python_lsp.py", line 275, in document_symbols
    return flatten(self._hook('pylsp_document_symbols', doc_uri))
  File "/usr/lib/python3/dist-packages/pylsp/python_lsp.py", line 154, in _hook
    doc = workspace.get_document(doc_uri) if doc_uri else None
AttributeError: 'NoneType' object has no attribute 'get_document'
[14:49:23  LSP Server Log] python@/home/cyan
2024-03-29 14:49:23,186 EDT - ERROR - pylsp_jsonrpc.endpoint - Failed to handle request 5
Traceback (most recent call last):
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/endpoint.py", line 117, in consume
    self._handle_request(message['id'], message['method'], message.get('params'))
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/endpoint.py", line 197, in _handle_request
    handler_result = handler(params)
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/dispatchers.py", line 25, in handler
    return method(**(params or {}))
  File "/usr/lib/python3/dist-packages/pylsp/python_lsp.py", line 362, in m_text_document__document_symbol
    return self.document_symbols(textDocument['uri'])
  File "/usr/lib/python3/dist-packages/pylsp/python_lsp.py", line 275, in document_symbols
    return flatten(self._hook('pylsp_document_symbols', doc_uri))
  File "/usr/lib/python3/dist-packages/pylsp/python_lsp.py", line 154, in _hook
    doc = workspace.get_document(doc_uri) if doc_uri else None
AttributeError: 'NoneType' object has no attribute 'get_document'
[14:49:23  LSP Server Log] python@/home/cyan
2024-03-29 14:49:23,194 EDT - ERROR - pylsp_jsonrpc.endpoint - Failed to handle request 6
Traceback (most recent call last):
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/endpoint.py", line 117, in consume
    self._handle_request(message['id'], message['method'], message.get('params'))
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/endpoint.py", line 197, in _handle_request
    handler_result = handler(params)
  File "/home/cyan/.local/lib/python3.10/site-packages/pylsp_jsonrpc/dispatchers.py", line 25, in handler
    return method(**(params or {}))
  File "/usr/lib/python3/dist-packages/pylsp/python_lsp.py", line 362, in m_text_document__document_symbol
    return self.document_symbols(textDocument['uri'])
  File "/usr/lib/python3/dist-packages/pylsp/python_lsp.py", line 275, in document_symbols
    return flatten(self._hook('pylsp_document_symbols', doc_uri))
  File "/usr/lib/python3/dist-packages/pylsp/python_lsp.py", line 154, in _hook
    doc = workspace.get_document(doc_uri) if doc_uri else None
AttributeError: 'NoneType' object has no attribute 'get_document'

[fgpietersz]

I had the same problem with Kate, and think it is Kate specific.

I found downgraging to python-lsp-server 1.10 fixed it