I'm trying to update Craft, but I'm getting an error while updating stating it's not possible to make a database backup. I've therefore gone for the suggestion to revert back instead of pushing on. Back in the CMS now when I try to create a backup manually (utilities-> database backup) it tells me:
there was a problem backing up your database. Please check the logs.
I've done that and it says this:
2018-11-30 11:43:57 [-][-][error][yii\base\Exception] yii\base\Exception: Could not create backup: proc_open() has been disabled for security reasons in /home/bxrdvjsx/xxxxxx.de/vendor/craftcms/cms/src/controllers/UtilitiesController.php:382
Does anyone know how I can fix this? If it isn't obvious from my question I'm not very familiar with Craft and have inherited this website from the person who built it.