Update app.py

app.py

@@ -63,7 +63,7 @@ def Generate_POP_Medley(input_num_medley_comps):
 
     print('Loading model checkpoint...')
 
-    trainer.load('Imagen_POP909_64_dim_12638_steps_0.00983_loss.ckptt')
+    trainer.load('Imagen_POP909_64_dim_12638_steps_0.00983_loss.ckpt')
 
     print('Done!')
     print('=' * 70)