Stop per-tick log flooding when referenced scenes are absent

actions/Filter/FilterBase.py

@@ -42,7 +42,10 @@ def show_current_filter_status(self):
             return
 
         status = self.backend.get_source_filter(self.get_settings().get("scene"), self.get_settings().get("filter"))
-        if status is None:
+        # The backend returns an empty dict (not None) when the scene or filter
+        # doesn't exist in the active scene collection; indexing it raises a
+        # KeyError over rpyc and logs a full traceback on every tick.
+        if not status or "filterEnabled" not in status:
             self.current_state = State.UNKNOWN
             self.hide_error()
             self.show_for_state(State.UNKNOWN)

backend/OBSController.py

@@ -87,6 +87,11 @@ def __init__(self):
         self._connected_state = False
         self.event_obs: obsws = None # All events are connected to this to avoid crash if a request is made in an event
         self.volume_meters = {}
+        # (scene, item) pairs already reported missing by get_scene_item_enabled.
+        # Every SceneItem action polls once per tick, so when the active scene
+        # collection doesn't contain the referenced scenes an unconditional
+        # warning floods the journal at one line per action per second.
+        self._missing_scene_items = set()
         pass
 
     @property
@@ -460,7 +465,14 @@ def get_scene_item_enabled(self, sceneName: str, sourceName: str) -> None:
             return self.call(requests.GetSceneItemEnabled(sceneName=sceneName, sceneItemId=sceneItemId))
         except Exception as e:
             if str(e) == "'sceneItemId'":
-                log.warning("Cannot find the scene item!")
+                # Expected while another scene collection is active: warn once
+                # per pair instead of once per tick.
+                if (sceneName, sourceName) not in self._missing_scene_items:
+                    self._missing_scene_items.add((sceneName, sourceName))
+                    log.warning(
+                        f"Cannot find scene item {sourceName!r} in scene "
+                        f"{sceneName!r} -- suppressing repeats of this warning"
+                    )
             else:
                 log.error(e)