Update app.py

app.py

@@ -102,7 +102,7 @@ if file_str:
 
         FLAGS(sys.argv)
         flags.DEFINE_string('classes', 'trees_simple.names', 'path to classes file')
-        flags.DEFINE_string('weights', 'checkpoints/trees_all_2.tf',
+        flags.DEFINE_string('weights', 'checkpoints/trees_all.tf',
                             'path to weights file')
         flags.DEFINE_boolean('tiny', False, 'yolov3 or yolov3-tiny')
         flags.DEFINE_integer('size', 416, 'resize images to')