Maximum function nesting level of '100' reached

Hello and thank you for contacting us.
It is recommended that you disable xdebug php extension when running a production environment of WooCommerce or WooCommerce Multiligual for that matter.
Running xdebug can cause severe performance issues, and as it seems in your case – the maimum nesting level of 100 being reached.
You can read more here: https://stackoverflow.com/questions/17488505/php-error-maximum-function-nesting-level-of-100-reached-aborting

You can fix it by either disabling xdeubg, or rising the debug.max_nesting_level in your php.ini or xdebug.ini – if you need that extension.

Please do note to use xdebug only on a testing/development server, because it can cost a good deal of performance.

Hello George,
Thanks for the quick response.
I am developing a website for my client.

I am using wamp local server.
I didn’t disable the xdebug or raised the limitation. But I upgraded the xdebug file to “php_xdebug-2.3.3-5.5-vc11.dll 64bit” and puted this dll into wamp\bin\php\php5.5.12\zend_ext\ and modify the loading line in php.ini to write the right name.
It worked and actually the website is now a little bit faster. also solved other issues with WPML and WooCommerce in general.
Thanks for the tip, I will keep it in mind.

Kind regards
Yamen

yamenshahin, if you find that other things were actually responsible for slowness (or parts of it) and you want to reconsider your rating, we won’t mind. ?? Thanks!

I am glad that my answer was helpful to you.
If you wish, you can read more about the subject here:
https://stackoverflow.com/questions/3522182/will-enabling-xdebug-on-a-production-server-make-php-slower
And in the linked articles where they inspect the performance when xdebug is enabled:
1.https://web.performancerasta.com/php%E2%80%99s-xdebug-tracing-overhead-in-production/
2.https://nikic.github.io/2012/01/19/Careful-XDebug-can-skew-your-performance-numbers.html

Disabling the extension would make your server even faster.

Thanks guys. I tried to change my feedback to 4 stars.