Fatal error: Uncaught Error: Call to undefined function RankMath\wp_rand() in /home/standa9/public_html/wp-content/plugins/seo-by-rank-math/includes/class-installer.php:648 Stack trace: #0 /home/standa9/public_html/wp-content/plugins/seo-by-rank-math/includes/class-installer.php(140): RankMath\Installer->create_cron_jobs() #1 /home/standa9/public_html/wp-content/plugins/seo-by-rank-math/includes/class-installer.php(50): RankMath\Installer->activate() #2 /home/standa9/public_html/wp-includes/class-wp-hook.php(324): RankMath\Installer->activation(false) #3 /home/standa9/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters('', Array) #4 /home/standa9/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #5 /home/standa9/public_html/wp-admin/includes/plugin.php(711): do_action('activate_seo-by...', false) #6 /home/standa9/public_html/wp-content/plugins/seo-by-rank-math-pro/rank-math-pro.php(478): activate_plugin('seo-by-rank-mat...') #7 /home/standa9/public_html/wp-content/plugins/seo-by-rank-ma in /home/standa9/public_html/wp-content/plugins/seo-by-rank-math/includes/class-installer.php on line 648