Fatal error: Uncaught Error: Class 'DataObject' not found in /var/www/html/brighton/cms/code/model/SiteTree.php:37 Stack trace: #0 /var/www/html/brighton/vendor/composer/ClassLoader.php(576): include() #1 /var/www/html/brighton/vendor/composer/ClassLoader.php(427): Composer\Autoload\{closure}('/var/www/html/b...') #2 [internal function]: Composer\Autoload\ClassLoader->loadClass('SiteTree') #3 [internal function]: spl_autoload_call('SiteTree') #4 /var/www/html/brighton/framework/parsers/ShortcodeParser.php(84): is_callable(Array) #5 /var/www/html/brighton/cms/_config.php(13): ShortcodeParser->register('sitetree_link', Array) #6 /var/www/html/brighton/framework/core/manifest/ConfigManifest.php(144): require_once('/var/www/html/b...') #7 /var/www/html/brighton/framework/core/Config.php(324): SS_ConfigManifest->activateConfig() #8 /var/www/html/brighton/framework/core/Core.php(129): Config->pushConfigYamlManifest(Object(SS_ConfigManifest)) #9 /var/www/html/brighton/framework/main.php(146): require_once('/var/www/html/b...') # in /var/www/html/brighton/cms/code/model/SiteTree.php on line 37