Просмотр кода страницы FASTPANEL - mpm prefork - AH00161 server reached MaxRequestWorkers setting, consider raising the MaxRequestWorkers setting

=== FASTPANEL - mpm prefork - AH00161 server reached MaxRequestWorkers setting, consider raising the MaxRequestWorkers setting ===


 # tail -f /var/log/apache2/error.log
 [mpm_prefork:error] [pid 24955] AH00161: server reached MaxRequestWorkers setting, consider raising the MaxRequestWorkers setting
 [mpm_prefork:notice] [pid 24955] AH00169: caught SIGTERM, shutting down

Ошибка только для MPM PREFORK, но поднять MaxRequestWorkers можно для всех MPM до 1024:
 # vi mods-available/mpm_prefork.conf
 # vi mods-available/mpm_worker.conf
 # vi mods-available/mpm_event.conf
 # vi conf.d/99-fastpanel.conf

 везде поставить:
 MaxRequestWorkers         1024

и перезапустить Apache (Ubuntu 20.04):
 # systemctl restart apache2