Fix count vs len on a list (#736 (comment))

Author: dandrzejewski

meshtastic/mesh_interface.py

@@ -292,7 +292,7 @@ def getNestedValue(node_dict: Dict[str, Any], key_path: str) -> Any:
                     return None
             return value
 
-        if showFields is None or showFields.count == 0:
+        if showFields is None or len(showFields) == 0:
           # The default set of fields to show (e.g., the status quo)
           showFields = ["N", "user.longName", "user.id", "user.shortName", "user.hwModel", "user.publicKey",
                         "user.role", "position.latitude", "position.longitude", "position.altitude",