Problem with Plugins DBv. and Formm. after upgrade PHP vers. from 7.4 to 8.1

I followed the required steps to upgrade from phpversion 7.4 to 8.1, but get the following error messages on the plugins “DBview” and “Formmaker”:

Fatal error: Uncaught Error: Non-static method DBViewPublic::getDefaultViews() cannot be called statically in /var/www/vhosts/lasermasters.nl/httpdocs/wp-content/plugins/dbview/DBView.class.php:118 Stack trace: #0 /var/www/vhosts/lasermasters.nl/httpdocs/wp-includes/class-wp-hook.php(308): DBViewPublic::activate() #1 /var/www/vhosts/lasermasters.nl/httpdocs/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters() #2 /var/www/vhosts/lasermasters.nl/httpdocs/wp-includes/plugin.php(517): WP_Hook->do_action() #3 /var/www/vhosts/lasermasters.nl/httpdocs/wp-admin/plugins.php(194): do_action() #4 {main} thrown in /var/www/vhosts/lasermasters.nl/httpdocs/wp-content/plugins/dbview/DBView.class.php on line 118

Fatal error: Uncaught Error: Call to undefined function create_function() in /var/www/vhosts/lasermasters.nl/httpdocs/wp-content/plugins/form-maker/form-maker.php:268 Stack trace: #0 /var/www/vhosts/lasermasters.nl/httpdocs/wp-admin/includes/plugin.php(2314): include_once() #1 /var/www/vhosts/lasermasters.nl/httpdocs/wp-admin/plugins.php(192): plugin_sandbox_scrape() #2 {main} thrown in /var/www/vhosts/lasermasters.nl/httpdocs/wp-content/plugins/form-maker/form-maker.php on line 268

do you know a solution for these two errors?

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