PHP Error message

Hi

Thanks for a really useful plug-in. Can I report an error message? It’s not caused me problems but I thought you’d want to know. I’m using PHP 7 if that makes a diffference.

PHP Fatal error: Uncaught Error: Call to undefined method SearchRegex::base_url() in /var/sites/i/{my site name}/public_html/wp-content/plugins/search-regex/view/results.php:26
Stack trace:
#0 /var/sites/i/{my site name}/public_html/wp-content/plugins/search-regex/search-regex.php(130): include()
#1 /var/sites/i/{my site name}/public_html/wp-content/plugins/search-regex/search-regex.php(116): SearchRegex->render('results', Array)
#2 /var/sites/i/{my site name}/public_html/wp-includes/class-wp-hook.php(298): SearchRegex->admin_screen('')
#3 /var/sites/i/{my site name}/public_html/wp-includes/class-wp-hook.php(323): WP_Hook->apply_filters('', Array)
#4 /var/sites/i/{my site name}/public_html/wp-includes/plugin.php(453): WP_Hook->do_action(Array)
#5 /var/sites/i/{my site name}/public_html/wp-admin/admin.php(222): do_action('tools_page_sear...')
#6 /var/sites/i/{my site name}/public_html/wp-admin/tools.php(10): require_once('/var/sites/i/it...')
#7 {m in /var/sites/i/{my site name}/public_html/wp-content/plugins/search-regex/view/results.php on line 26

Thanks again