I wouldn't be posting here if it wasn't serious.. I lost all my data because of the update to WordPress 5.
Some background info: we are working on a new website for out company, but decided to develop on a local machine first. We only have limited knowledge of WordPress, so we installed Bitnami Wordpress and everything seemed fine. Today a new update was launched and we installed it, but the screen froze and we couldn't login anymore. We removed the maintenance file, but that didn't help, we got a blank page when logging in to our localhost. We then copied all files inside the Bitnami location and then removed Bitnami. We reinstalled, but now it says Bitnami 5.0.0 and no longer 4.9.8-1. Pasting the old files in there doesn't work.
The biggest question we have now: is all our data lost? We thought we had a backup, but it seems to fail.. It would be a total disaster.
We appreciate some help!