Bunch of no edit notices?

I am having this as an issue, and having to change the plugin, but…i want to leave it to help you improve if this is something you are still developing! Good luck:

Warning: Trying to access array offset on value of type null in /homepages/4/d899045802/htdocs/clickandbuilds/Portfolio/wp-content/plugins/wp-htaccess-control/wp-htaccess-control.php on line 819

Warning: Trying to access array offset on value of type null in /homepages/4/d899045802/htdocs/clickandbuilds/Portfolio/wp-content/plugins/wp-htaccess-control/wp-htaccess-control.php on line 819

Warning: Trying to access array offset on value of type null in /homepages/4/d899045802/htdocs/clickandbuilds/Portfolio/wp-content/plugins/wp-htaccess-control/wp-htaccess-control.php on line 825

Warning: Trying to access array offset on value of type null in /homepages/4/d899045802/htdocs/clickandbuilds/Portfolio/wp-content/plugins/wp-htaccess-control/wp-htaccess-control.php on line 831

Warning: Trying to access array offset on value of type null in /homepages/4/d899045802/htdocs/clickandbuilds/Portfolio/wp-content/plugins/wp-htaccess-control/wp-htaccess-control.php on line 841

Warning: Trying to access array offset on value of type null in /homepages/4/d899045802/htdocs/clickandbuilds/Portfolio/wp-content/plugins/wp-htaccess-control/wp-htaccess-control.php on line 851

Warning: Trying to access array offset on value of type null in /homepages/4/d899045802/htdocs/clickandbuilds/Portfolio/wp-content/plugins/wp-htaccess-control/wp-htaccess-control.php on line 851

Warning: Cannot modify header information - headers already sent by (output started at /homepages/4/d899045802/htdocs/clickandbuilds/Portfolio/wp-content/plugins/wp-htaccess-control/wp-htaccess-control.php:819) in /homepages/4/d899045802/htdocs/clickandbuilds/Portfolio/wp-admin/includes/misc.php on line 1380

Warning: Cannot modify header information - headers already sent by (output started at /homepages/4/d899045802/htdocs/clickandbuilds/Portfolio/wp-content/plugins/wp-htaccess-control/wp-htaccess-control.php:819) in /homepages/4/d899045802/htdocs/clickandbuilds/Portfolio/wp-includes/functions.php on line 6878

Warning: Cannot modify header information - headers already sent by (output started at /homepages/4/d899045802/htdocs/clickandbuilds/Portfolio/wp-content/plugins/wp-htaccess-control/wp-htaccess-control.php:819) in /homepages/4/d899045802/htdocs/clickandbuilds/Portfolio/wp-admin/admin-header.php on line 9

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