Warning: Undefined array key "ENC_KEY" in /var/www/corsicla/src/Lib/EncryptionTrait.php on line 28

Fatal error: Uncaught TypeError: Cake\Utility\Security::decrypt(): Argument #2 ($key) must be of type string, null given, called in /var/www/corsicla/src/Lib/EncryptionTrait.php on line 55 and defined in /var/www/corsicla/vendor/cakephp/cakephp/src/Utility/Security.php:240 Stack trace: #0 /var/www/corsicla/src/Lib/EncryptionTrait.php(55): Cake\Utility\Security::decrypt() #1 /var/www/corsicla/config/app_local.php(60): App\Lib\EncryptionTrait::decryptPassword() #2 /var/www/corsicla/vendor/cakephp/cakephp/src/Core/Configure/Engine/PhpConfig.php(84): include('/var/www/corsic...') #3 /var/www/corsicla/vendor/cakephp/cakephp/src/Core/Configure.php(339): Cake\Core\Configure\Engine\PhpConfig->read() #4 /var/www/corsicla/config/bootstrap.php(104): Cake\Core\Configure::load() #5 /var/www/corsicla/vendor/cakephp/cakephp/src/Http/BaseApplication.php(183): require_once('/var/www/corsic...') #6 /var/www/corsicla/src/Application.php(73): Cake\Http\BaseApplication->bootstrap() #7 /var/www/corsicla/vendor/cakephp/cakephp/src/Http/Server.php(122): App\Application->bootstrap() #8 /var/www/corsicla/vendor/cakephp/cakephp/src/Http/Server.php(84): Cake\Http\Server->bootstrap() #9 /var/www/corsicla/webroot/index.php(40): Cake\Http\Server->run() #10 {main} thrown in /var/www/corsicla/vendor/cakephp/cakephp/src/Utility/Security.php on line 240