Update app.py

app.py

@@ -110,11 +110,11 @@ def get_audioldm(prompt):
     return audio_result
 
 def get_riffusion(prompt):
-    client = Client("https://fffiloni-spectrogram-to-music.hf.space/--replicas/1qwjx/")
+    client = Client("https://fffiloni-spectrogram-to-music.hf.space/")
     result = client.predict(
 		prompt,	# str  in 'Musical prompt' Textbox component
 		"",	# str  in 'Negative prompt' Textbox component
-		"",	# filepath  in 'parameter_4' Audio component
+		None,	# filepath  in 'parameter_4' Audio component
 		10,	# float (numeric value between 5 and 10) in 'Duration in seconds' Slider component
 		api_name="/predict"
     )