Hello,

A 401 unauthorized error can happen for a variety of reasons and is most likely a permission issue in the files, or a bad plugin. The best way to find out is to log into your server and check the logs.

This can be found by typing:

tail -50 /var/log/apache2/error.log

This will give you the last 50 errors provided by your web server. These should hopefully provide some insight into why it’s giving you a 401 error. Whenever you get an error in the browser, it’s important to get additional details from the logs, to find out what the cause is.