Permissions and ownership errors
A 403 Forbidden error can also be caused by incorrect ownership or permissions on your files and folders.Rule of thumb for correct permissions:
Folders: 755Files: 644
Linux permissions can be represented by numbers, letters, or words. They also include an entry for Owner, Group, and Everyone.
755 stands for Owner: read, write, execute; Group: read, execute; Everyone: read, execute
644 stands for Owner: read, write; Group: read, Everyone: read
How to change file or folder permission using cPanel
1. Login to cPanel.2. Go to File Manager
3. Go to public_html directory.
4. Right click on the file or folder you want to change permission and select.
5. Click "Change Permissions" Option. And Tick Mark on box for permission.