fixed an error while using cursor in aggregate

dipinarora9 · dipinarora9 · commit 582efc3b1e8f · 2020-05-30T19:49:03.000+05:30
diff --git a/redisearch/client.py b/redisearch/client.py
@@ -453,7 +453,7 @@ def aggregate(self, query):
         else:
             cursor = None
 
-        if query._with_schema:
+        if isinstance(query, AggregateRequest) and query._with_schema:
             schema = raw[0]
             rows = raw[2:]
         else:
