Fatal error: Uncaught Error: Call to undefined function RankMath\wp_rand() in /var/www/vhosts/positeach.com/httpdocs/wp-content/plugins/seo-by-rank-math/includes/class-installer.php:605 Stack trace: #0 /var/www/vhosts/positeach.com/httpdocs/wp-content/plugins/seo-by-rank-math/includes/class-installer.php(139): RankMath\Installer->create_cron_jobs() #1 /var/www/vhosts/positeach.com/httpdocs/wp-content/plugins/seo-by-rank-math/includes/class-installer.php(49): RankMath\Installer->activate() #2 /var/www/vhosts/positeach.com/httpdocs/wp-includes/class-wp-hook.php(324): RankMath\Installer->activation(false) #3 /var/www/vhosts/positeach.com/httpdocs/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters('', Array) #4 /var/www/vhosts/positeach.com/httpdocs/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #5 /var/www/vhosts/positeach.com/httpdocs/wp-admin/includes/plugin.php(705): do_action('activate_seo-by...', false) #6 /var/www/vhosts/positeach.com/httpdocs/wp-content/plugins/seo-by-rank-math-pro/rank-math-pro.php(478): activate_plugin('seo-by-rank-mat...') #7 /var/www/vhosts/positeach.com/httpdocs/wp-content/plugins/seo-by-rank-math-pro/rank-math-pro.php(148): RankMathPro->activate_free_version() #8 /var/www/vhosts/positeach.com/httpdocs/wp-content/plugins/seo-by-rank-math-pro/rank-math-pro.php(95): RankMathPro->are_requirements_met() #9 /var/www/vhosts/positeach.com/httpdocs/wp-content/plugins/seo-by-rank-math-pro/rank-math-pro.php(86): RankMathPro->__construct() #10 /var/www/vhosts/positeach.com/httpdocs/wp-content/plugins/seo-by-rank-math-pro/rank-math-pro.php(506): RankMathPro::get() #11 /var/www/vhosts/positeach.com/httpdocs/wp-content/plugins/seo-by-rank-math-pro/rank-math-pro.php(510): rank_math_pro() #12 /var/www/vhosts/positeach.com/httpdocs/wp-settings.php(517): include_once('/var/www/vhosts...') #13 /var/www/vhosts/positeach.com/httpdocs/wp-config.php(106): require_once('/var/www/vhosts...') #14 /var/www/vhosts/positeach.com/httpdocs/wp-load.php(50): require_once('/var/www/vhosts...') #15 /var/www/vhosts/positeach.com/httpdocs/wp-blog-header.php(13): require_once('/var/www/vhosts...') #16 /var/www/vhosts/positeach.com/httpdocs/index.php(17): require('/var/www/vhosts...') #17 {main} thrown in /var/www/vhosts/positeach.com/httpdocs/wp-content/plugins/seo-by-rank-math/includes/class-installer.php on line 605