Fatal error: Uncaught Error: Call to undefined function MailPoet\Migrator\mb_strimwidth() in /home/r1viera/public_html/wp-content/plugins/mailpoet/lib/Migrator/Migrator.php:90 Stack trace: #0 /home/r1viera/public_html/wp-content/plugins/mailpoet/lib/Migrator/Migrator.php(38): MailPoet\Migrator\Migrator->getStatus() #1 /home/r1viera/public_html/wp-content/plugins/mailpoet/lib/Config/Activator.php(78): MailPoet\Migrator\Migrator->run() #2 /home/r1viera/public_html/wp-content/plugins/mailpoet/lib/Config/Activator.php(60): MailPoet\Config\Activator->processActivate() #3 /home/r1viera/public_html/wp-content/plugins/mailpoet/lib/Config/Initializer.php(423): MailPoet\Config\Activator->activate() #4 /home/r1viera/public_html/wp-includes/class-wp-hook.php(324): MailPoet\Config\Initializer->maybeRunActivator('') #5 /home/r1viera/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters('', Array) #6 /home/r1viera/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #7 /home/r1viera/public_html/wp-settings.php(704): do_action('init') #8 /home/r1viera/public_html/wp-config.php(97): require_once('/home/r1viera/p...') #9 /home/r1viera/public_html/wp-load.php(50): require_once('/home/r1viera/p...') #10 /home/r1viera/public_html/wp-blog-header.php(13): require_once('/home/r1viera/p...') #11 /home/r1viera/public_html/index.php(17): require('/home/r1viera/p...') #12 {main} thrown in /home/r1viera/public_html/wp-content/plugins/mailpoet/lib/Migrator/Migrator.php on line 90