fix - deal with case when check view exists returns None (#5740)

litellm/proxy/utils.py

@@ -991,6 +991,11 @@ class PrismaClient:
                 """
             )
             expected_total_views = len(expected_views)
+
+            # Deal with case when ret is None
+            if ret is None:
+                ret = [{"view_count": 0, "view_names": []}]
+
             if ret[0]["view_count"] == expected_total_views:
                 verbose_proxy_logger.info("All necessary views exist!")
                 return