Nginx 1 FastCGI sent in stderr: Primary script unknown (12 Solutions!!)
nginx: FastCGI sent in stderr: Primary script unknown
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nginx FastCGI sent in stderr: Primary script unknown
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nginx php5-fpm File not found -- FastCGI sent in stderr: Primary script unknown
DevOps & SysAdmins: PHP-FPM Primary script unknown, but SCRIPT_FILENAME is set correctly
PHP : How to debug FastCGI sent in stderr: Primary script unknown while reading response header fro
Error 200#0: \*79 FastCGI sent in stderr: Primary script unknown while reading response header...
FastCGI sent in stderr: Primary script unknown while reading response header from upstream
NGINX: Primary script unknown - when calling a dynamic URL with controller prefix
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Last Updated: August 15, 2026
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