Fatal error: Uncaught Error: Undefined constant "REDIS_HOST" in /home/milu2/api/public_html/app/hooks/hooks.common.php:9 Stack trace: #0 /home/milu2/api/public_html/system/core/Hooks.php(247): _Common->index(Array) #1 /home/milu2/api/public_html/system/core/Hooks.php(144): CI_Hooks->_run_hook(Array) #2 /home/milu2/api/public_html/system/core/CodeIgniter.php(527): CI_Hooks->call_hook('post_controller...') #3 /home/milu2/api/public_html/index.php(319): require_once('/home/milu2/api...') #4 {main} thrown in /home/milu2/api/public_html/app/hooks/hooks.common.php on line 9