Update app.py

app.py

@@ -143,7 +143,7 @@ def get_tango2(prompt):
         raise gr.Error("Tango2 space API is not ready, please try again in few minutes ")
     
     result = client.predict(
-    		prompt=prompt,
+    		prompt,
     		steps=100,
     		guidance=4,
     		api_name="/predict"