Can't create maps

Hello,

I cannot use the plugin due to the following error on the Maps page :
call_user_func_array() expects parameter 1 to be a valid callback, function ‘maps_page_handler’ not found or invalid function name in /home/[…]/wp-includes/plugin.php on line 496

https://ww.wp.xz.cn/plugins/mapbox-for-wp-advanced/