apps/chat/integrations/mattermost/client.py

@@ -72,22 +72,12 @@ class MattermostClient:
     def _ensure_team_member(self, mm_user_id: str) -> None:
         if not self._team_id:
             return
-        try:
-            self._driver.teams.get_team_member(self._team_id, mm_user_id)
-            return  # already a member
-        except ResourceNotFound:
-            pass
-        except Exception as exc:
-            raise MattermostError(f"Team membership lookup failed: {exc}") from exc
-
         try:
             self._driver.teams.add_user_to_team(
                 self._team_id, options={"team_id": self._team_id, "user_id": mm_user_id}
             )
-        except Exception as exc:
-            raise MattermostError(
-                f"Adding user {mm_user_id} to team failed: {exc}"
-            ) from exc
+        except Exception:
+            pass  # already a member or team not configured — not fatal
 
     def get_or_create_user(self, user_id: UUID) -> str:
         """