403 Forbidden error

Solution : 1

Please check ownership for the public_html dir

Permission and Ownership should be

a1professionals nobody 4096 Jun 9 15:38 public_html/

Solution : 2

If Ownership has been setup properly, Then please check the apache log It might be issue with Mod_sec

tail -f /usr/local/apache/logs/error_log | grep (Your ISP ip)