DevOps & SysAdmins: PHP-FPM Primary script unknown, but SCRIPT_FILENAME is set correctly
nginx: FastCGI sent in stderr: Primary script unknown
nginx 12 FastCGI sent in stderr Primary script unknown
NGINX Explained in 100 Seconds
DevOps & SysAdmins: unknown directive stream in /etc/nginx/nginx.conf:86 (3 Solutions!!)
nginx and php-fpm: Primary script unknown while reading response header from upstream
DevOps & SysAdmins: FastCGI sent in stderr: Primary script unknown + Owncloud
How to fixing nginx - unknown directive (if $remote_addr)
FastCGI sent in stderr: Primary script unknown while reading response header from upstream
DevOps & SysAdmins: nginx + php fpm -＞ 404 php pages - file not found (2 Solutions!!)
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Last Updated: August 15, 2026
Conclusion
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