lib/mongoid/contextual/aggregable/mongo.rb in mongoid-7.0.0 vs lib/mongoid/contextual/aggregable/mongo.rb in mongoid-7.0.1

@@ -21,10 +21,10 @@
         #     "avg" => 750.0
         #   }
         #
         # @since 3.0.0
         def aggregates(field)
-          result = collection.find.aggregate(pipeline(field), session: session).to_a
+          result = collection.find.aggregate(pipeline(field), session: _session).to_a
           if result.empty?
             { "count" => 0, "sum" => nil, "avg" => nil, "min" => nil, "max" => nil }
           else
             result.first
           end