Fatal error: Uncaught Error: Call to undefined function SilverStripe\Core\mb_regex_encoding() in /var/www/finnlevinsen-scalepoint-php-7-test/vendor/silverstripe/framework/src/Core/BaseKernel.php:168 Stack trace: #0 /var/www/finnlevinsen-scalepoint-php-7-test/vendor/silverstripe/framework/src/Core/CoreKernel.php(31): SilverStripe\Core\BaseKernel->bootPHP() #1 /var/www/finnlevinsen-scalepoint-php-7-test/vendor/silverstripe/framework/src/Control/HTTPApplication.php(132): SilverStripe\Core\CoreKernel->boot() #2 /var/www/finnlevinsen-scalepoint-php-7-test/vendor/silverstripe/framework/src/Control/Middleware/HTTPMiddlewareAware.php(65): SilverStripe\Control\HTTPApplication->SilverStripe\Control\{closure}() #3 /var/www/finnlevinsen-scalepoint-php-7-test/vendor/silverstripe/framework/src/Control/HTTPApplication.php(130): SilverStripe\Control\HTTPApplication->callMiddleware() #4 /var/www/finnlevinsen-scalepoint-php-7-test/vendor/silverstripe/framework/src/Control/HTTPApplication.php(113): SilverStripe\Control\HTTPApplication->execute() #5 /var/www/finnlevinsen-scalepoint-php-7-test/public/index.php(23): SilverStripe\Control\HTTPApplication->handle() #6 {main} thrown in /var/www/finnlevinsen-scalepoint-php-7-test/vendor/silverstripe/framework/src/Core/BaseKernel.php on line 168