Update app.py

app.py

@@ -39,7 +39,7 @@ def inference(audio_file, model_name, vocals, drums, bass, other, mp3, mp3_bitra
     demucs.separate.main(shlex.split(cmd))
 
     # Get the output file paths
-    output_dir = os.path.join("separated", model_name, os.path.splitext(os.path.basename(audio_file.name))[0])
+    output_dir = os.path.join("separated", model_name, os.path.splitext(os.path.basename(audio_file))[0])
     stems = {
         "vocals": os.path.join(output_dir, "vocals.wav"),
         "drums": os.path.join(output_dir, "drums.wav"),