Notice : Trying to access array offset on value of type null in views_plugin_display

Hello,

First, thanks for the cool module.
When I save my view after setting the Show More pager, I get these error messages in the view edit page :

Notice : Trying to access array offset on value of type null in views_plugin_display->get_plugin() (line 965 in /sites/all/modules/views/plugins/views_plugin_display.inc).
Notice : Trying to access array offset on value of type null dans views_plugin_display->get_plugin() (line 971 in /sites/all/modules/views/plugins/views_plugin_display.inc).

The view works correctly in front end despite this error messages but is there a way to solve it?
My site is on drupal 7.99, php 7.4.