warning when desactivate the plugin

Hello

First of all thank you for this plugin , i really apreciate how easy the informations are availible.

However i have a issue when i want to desactivate the plugin

After the desactivation, i have this message on the home page and back office
Warning: call_user_func_array() expects parameter 1 to be a valid callback, function ‘number_of_posts_on_archive’ not found or invalid function name in /home/rudycoia/public_html/wp-includes/plugin.php on line 507
Could you help me on this please?

Thank you

https://www.ads-software.com/plugins/query-monitor/