Sometimes, when a site doesnt work or is unable to process the request then users usually see the error of WordPress white screen of death. This error is always caused because of the memory limit exhaustion and PHP code errors. Most of the time, file permission issues can also cause this error to happen. Determining that admin on your site is working or not can help you in fixing this problem with ease. If the admin is working perfectly fine then there are chances that you have a faulty plugin or theme.
Sometimes, a web browser can also cause this error to happen. This error can be of different variations on the browsers. For fixing this sort of error, you must try disabling themes and exceeding the memory limit. Apart from this, switching to debugging can also be beneficial in fixing this problem.