Code timings crash website | WordPress.org

Yes that’s correct. Are you able to check your PHP error log to see what the error is?

Also, the plugin crash when I modify the products in woocommerce.

This is the error when I modify the products in woocommerce:

Fatal error: Uncaught Error: parse_url() expects parameter 1 to be string, null given
in /home/customer/www/altaico.es/public_html/wp-content/plugins/query-monitor/collectors/http.php on line 374

Call stack:

1. parse_url()
   wp-content/plugins/query-monitor/collectors/http.php:374
2. QM_Collector_HTTP::process()
   wp-content/plugins/query-monitor/classes/Collectors.php:84
3. QM_Collectors::process()
   wp-content/plugins/query-monitor/classes/Dispatcher.php:108
4. QM_Dispatcher::get_outputters()
   wp-content/plugins/query-monitor/dispatchers/Redirect.php:39
5. QM_Dispatcher_Redirect::filter_wp_redirect()
   wp-includes/class-wp-hook.php:324
6. WP_Hook::apply_filters()
   wp-includes/plugin.php:205
7. apply_filters()
   wp-includes/pluggable.php:1396
8. wp_redirect()
   wp-admin/includes/post.php:2205
9. redirect_post()
   wp-admin/post.php:234

Query Monitor

And this is the error when I add the code for timings:

Fatal error: Uncaught Error: Call to undefined function my_potentially_slow_function()
in /home/customer/www/altaico.es/public_html/wp-content/themes/generatepress-child/functions.php on line 138

Call stack:

1. include()
   wp-settings.php:611
2. require_once()
   wp-config.php:83
3. require_once()
   wp-load.php:50
4. require_once()
   wp-admin/admin.php:34
5. require_once()
   wp-admin/index.php:10

Query Monitor

my_potentially_slow_function is just some example code, you should replace this with the code that you’re trying to profile.