Causes

the user made a valid request but the server is refusing to serve the request. It usually occurs :

• when the user that is running the web server process, does not have sufficient permissions to read the file that is being accessed.

Fixes

Step 1

• check the file’s permission settings.

Step 2

• user can also confirm whether the system protects the file in cPanel’s Indexes interface (cPanel >> Home >> Advanced >> Indexes).