Solution:
The stuser class is being initialized somewhere in your code. You can access it on the admin side if you’re logged in, and potentially view the site without being signed in.
Since it’s unclear whether this class is essential, you can:
- Open the file where new stuser() is called.
- Comment out the new stuser() line.
- Check if the functionality of your theme or plugin is affected.
In many cases, this class is not critical for theme functionality, but testing is recommended before permanently removing it.