Getting a 403 response code - what's the best way to troubleshoot it? or Why am I seeing a 403 respon

Not all 403s are created equal! Could be:
- Missing `Require all granted` in Apache
- Nginx’s `deny` directive
- Even a firewall (like CSF/LFD) blocking you

Try tailing the error log with `tail -f /var/log/apache2/error.log` while reproducing the issue.