Gracefully handle invalid queries

core/lib/opensearch.py

@@ -1,5 +1,6 @@
 from django.conf import settings
 from opensearchpy import OpenSearch
+from opensearchpy.exceptions import RequestError
 
 
 def initialise_opensearch():
@@ -91,7 +92,10 @@ def run_main_query(client, user, query, fields=None, size=None):
             return False
     search_query = construct_query(query, fields, size)
     # fmt: off
-    response = client.search(body=search_query,
-                             index=settings.OPENSEARCH_INDEX_MAIN)
+    try:
+        response = client.search(body=search_query,
+                                 index=settings.OPENSEARCH_INDEX_MAIN)
+    except RequestError:
+        return False
     filter_blacklisted(user, response)
     return response