Depending on the modules you’ve activated, and the new elements you added to your site thanks to Jetpack and, your theme, and other plugins, that could indeed be expected. For example, if you’ve added Like buttons, Related Posts, a few widgets, and sharing buttons, that will indeed increase your site’s loading time.
Like with every other plugin, when enabling features, you decide to decide if that feature is worth the performance hit it could bring to your site. In general, any features that use images, or call resources from third-party services (like the sharing buttons or the Facebook and Twitter widgets) will have an effect on your site performance.
That said, it should not create any Fatal errors like the ones you’re experiencing! Could you add the following to your site’s wp-config.php file?
define( 'WP_DEBUG', true );
if ( WP_DEBUG ) {
@error_reporting( E_ALL );
@ini_set( 'log_errors', true );
@ini_set( 'log_errors_max_len', '0' );
define( 'WP_DEBUG_LOG', true );
define( 'WP_DEBUG_DISPLAY', false );
define( 'CONCATENATE_SCRIPTS', false );
define( 'SAVEQUERIES', true );
}
Your wp-config.php file may already include a line that says “define(‘WP_DEBUG’, false);”. You can remove it, and replace it by the code above.
Once you’ve done so, try to reproduce one of those 500 errors, and then check the wp-content/debug.log file for errors. You can paste the results here. You can then replace define('WP_DEBUG', true); by define('WP_DEBUG', false); in the code above.
Thank you!
