For some reason when I upgraded all the plugins, I got a white screen. Is there any way to debug it?
Connect to FTP using FileZilla. Rename each plugin folder name one by one and see which plugin is causing the issue.
Once you found out the plugin which is causing the problem. Just reinstall it.
You can turn on debugging in WordPress. Add the following lines in your wp-config.php file. After that check the debug.log file in the wp-content directory.
// Turns WordPress debugging on define('WP_DEBUG', true); // Tells WordPress to log everything to the /wp-content/debug.log file define('WP_DEBUG_LOG', true); // Doesn't force the PHP 'display_errors' variable to be on define('WP_DEBUG_DISPLAY', false); // Hides errors from being displayed on-screen @ini_set('display_errors', 0);