Update app.py

app.py

@@ -4,6 +4,7 @@ from svnm.models import GenderDetection
 from datetime import datetime
 from tensorflow.keras.saving import register_keras_serializable
 from tensorflow.keras import layers
+import tensorflow as tf
 @register_keras_serializable()
 class ColorScaler(layers.Layer):
     def __init__(self,**kwargs):