Update app.py

app.py

@@ -136,7 +136,7 @@ class L2NormLayer(layers.Layer):
     def call(self, inputs):
         return tf.math.l2_normalize(inputs, axis=self.axis, epsilon=self.epsilon)
 
-class SentenceEncoder(Model):
+class SentenceEncoder(tf.keras.Model):
     def __init__(self, vocab_size, embed_dim=EMBED_DIM, latent_dim=LATENT_DIM, max_len=MAX_LEN, pad_id=pad_id, dropout_rate=EMBED_DROPOUT):
         super().__init__()
         self.pad_id = pad_id