Hi,
Majority of the time when you see a white screen of death in WordPress, it means that you exhausted the memory limit. This could be caused by a plugin that you may be using that is not functioning properly. It could also be caused by a poorly coded theme that you are using. It could also mean that there is an issue with your web hosting server.
You should first try with increasing your default Memory Limit.
First open your wp-config.php which is located in the root WordPress directory. Then add the following line inside the main php tag:
define('WP_MEMORY_LIMIT', '128M');
If you still get the error after this fix, then please contact your host. Most likely, they would have to go in their php.ini file to increase the memory limit for you.
You can also use the WordPress debug function to see what type of errors are being outputted. Add the following code in your wp-config.php file.
error_reporting(E_ALL); ini_set('display_errors', 1);
define( 'WP_DEBUG', true);
Once you add this, the blank screen will now have errors, warnings, and notices. These may be able to help you determine the root cause.
Thanks,