WordPress is the simplest, most popular way to create your own website or blog. In fact, WordPress powers over 43.3% of all the websites on the Internet.
It’d be almost impossible to know every potential WordPress error inside and out. However, understanding some of the most common WordPress issues users experience can help you prepare and troubleshoot WordPress problems when they pop up.
Below are the common errors you shall faced on your WordPress site along with with a general description/solution to the errors.
400 Errors
500 Errors (Errors on your site would be labelled with the error number of 5xx where it indicate that the server is not capable to performing the given request. )
Server/Hosting related errors (Other than the 400/500 errors above, there are plenty more of WordPress-specific issue that may cause the issue)
Troubleshooting
Optimizing WooCommerce to improve WordPress Performance
Health check and Troubleshooting plugin
How to resolve WP-CRON causing high resource usage