fix check os

app.py

@@ -97,7 +97,7 @@ def run_and_submit_all( profile: gr.OAuthProfile | None):
                                 f.write(chunk)
 
             #use youtube from data/ directory as scrapping doesn't work in spaces
-            if os.exists(f"data/{task_id}.mp4"):
+            if os.path.exists(f"data/{task_id}.mp4"):
                 path_filename = f"data/{task_id}.mp4"
 
             if path_filename is not None: