WordPress is an open source blogging and website creation tool written in PHP and MySQL. It is a highly flexible content management system (CMS) that enables you to build and manage your website using just your web browser. According to a W3Techs survey, WordPress is used by 31.8% of all websites.
WordPress sites generate errors that can negatively affect users, but they are not reported in tools like Google Analytics. You need to examine server-side logs to determine how often they happen. These errors are not just generated by WordPress, but by the dozens of plugins and custom themes that businesses add. Common WordPress errors experienced by users include the “white screen of death," "internal server error," "connection timed out," and many more.