WordPress is not perfect, and you will find an error every so often. Fortunately, thanks to a large and constantly working community of developers, most of these problems already have solutions.
There are several really common errors that occur on your WordPress website. Following WordPress codex when it comes to proper installation, maintenance and hardening WordPress is a good start for stable and issue-free online presence.
Backing up your content is important. Setting up a database backup is not exactly the simplest of tasks, but if you have a good database administrator, you will be able to save yourself a lot of effort.