fix build on 10.14 (#3140)

Guihao Liang · web-flow · commit 098355616f1a · 2020-04-22T16:03:05.000-07:00
* fix build on 10.14
diff --git a/src/ml/neural_net/mps_graph_trainer.mm b/src/ml/neural_net/mps_graph_trainer.mm
@@ -2,6 +2,7 @@
 
 #include <tuple>
 
+#include <core/logging/logger.hpp>
 #include <ml/neural_net/float_array.hpp>
 
 #import "mps_device_manager.h"
