In php80ub20.solar.lan, PHP uses fpm(FastCGI Process Manager) In FPM, you cannot turn off `pcre.jit` by executing --------------------------------------------------------- ini_set('pcre.jit','0'); --------------------------------------------------------- So, you need to turn it off in PHP.INI To do so, ========================================================= (1) Open PHP.INI --------------------------------------------------------- auser@php80ub20:/etc/php/8.1/fpm$ sudo nano php.ini ========================================================= ========================================================= (2) Set pcre.jit to 0 --------------------------------------------------------- pcre.jit=0 ========================================================= ========================================================= (3) Reboot PHP fpm --------------------------------------------------------- $sudo systemctl restart php8.1-fpm =========================================================