Fix: Prevent server crash on shutdown if not initialized

Check if self.config is None in _hook to avoid AttributeError when
shutdown is called without a prior successful initialize request.

Signed-off-by: Matěj Cepl <[email protected]>

Author: mcepl

pylsp/python_lsp.py

@@ -266,6 +266,8 @@ def _match_uri_to_workspace(self, uri):
 
     def _hook(self, hook_name, doc_uri=None, **kwargs):
         """Calls hook_name and returns a list of results from all registered handlers"""
+        if self.config is None:
+            return []
         workspace = self._match_uri_to_workspace(doc_uri)
         doc = workspace.get_document(doc_uri) if doc_uri else None
         hook_handlers = self.config.plugin_manager.subset_hook_caller(