ok

app.py

@@ -57,7 +57,7 @@ def home():
 
 @app.route('/lab')
 def lab():
-    return redirect("http://localhost:8888", code=302)
+    return redirect("http://localhost:8889", code=302)
 
 if __name__ == "__main__":
     with open(log_file, "a") as f: