Fatal error: Uncaught Error: Call to undefined function SilverStripe\Core\Manifest\json_decode() in /var/www/webroot/ROOT/site/vendor/silverstripe/framework/src/Core/Manifest/Module.php:200 Stack trace: #0 /var/www/webroot/ROOT/site/vendor/silverstripe/framework/src/Core/Manifest/Module.php(60): SilverStripe\Core\Manifest\Module->loadComposer() #1 /var/www/webroot/ROOT/site/vendor/silverstripe/framework/src/includes/constants.php(213): SilverStripe\Core\Manifest\Module->__construct('/var/www/webroo...', '/var/www/webroo...') #2 /var/www/webroot/ROOT/site/vendor/composer/autoload_real.php(75): require('/var/www/webroo...') #3 /var/www/webroot/ROOT/site/vendor/composer/autoload_real.php(65): composerRequire6a520f7b586eea5e8a4ff5d7a0892924('795b01cf23ed94c...', '/var/www/webroo...') #4 /var/www/webroot/ROOT/site/vendor/autoload.php(7): ComposerAutoloaderInit6a520f7b586eea5e8a4ff5d7a0892924::getLoader() #5 /var/www/webroot/ROOT/site/public/index.php(8): require('/var/www/webroo...') #6 {main} thrown in /var/www/webroot/ROOT/site/vendor/silverstripe/framework/src/Core/Manifest/Module.php on line 200