Update app.py

app.py

@@ -134,7 +134,7 @@ def create_and_train_model(
         Dense(64, activation='relu'),
         Dense(32, activation='relu'),
         Dense(num_classes, activation='softmax')
-    ])
+    )
 
     if optimizer_str.lower() == 'adam':
         optimizer = Adam(learning_rate=learning_rate)