Update handler.py

query -> self.query

handler.py

@@ -164,7 +164,7 @@ class EndpointHandler:
         start_index=int(start_index)
         limit_count=int(limit_count)
         logger.info(f"Start index: {start_index}, Limit count: {limit_count}")
-        data = list(self.collection.find(query).skip(start_index).limit(limit_count)) 
+        data = list(self.collection.find(self.query).skip(start_index).limit(limit_count)) 
         start_time=time.time()
         for document in data:
             try: