Fatal error: Uncaught Error: Call to undefined function Smartsupp\mb_strlen() in /var/www/vhosts/instala-gasnatural.com/httpdocs/wp-content/plugins/smartsupp-live-chat/vendor/smartsupp/chat-code-generator/src/Smartsupp/ChatGenerator.php:332 Stack trace: #0 /var/www/vhosts/instala-gasnatural.com/httpdocs/wp-content/plugins/smartsupp-live-chat/vendor/smartsupp/chat-code-generator/src/Smartsupp/ChatGenerator.php(451): Smartsupp\ChatGenerator->javascriptEscape('cd90f00f442b9b2...') #1 /var/www/vhosts/instala-gasnatural.com/httpdocs/wp-content/plugins/smartsupp-live-chat/public/class-smartsupp.php(164): Smartsupp\ChatGenerator->render(true) #2 /var/www/vhosts/instala-gasnatural.com/httpdocs/wp-includes/plugin.php(496): Smartsupp->add_chat_script('') #3 /var/www/vhosts/instala-gasnatural.com/httpdocs/wp-includes/general-template.php(2211): do_action('wp_footer') #4 /var/www/vhosts/instala-gasnatural.com/httpdocs/wp-content/themes/456industry/footer.php(72): wp_footer() #5 /var/www/vhosts/instala-gasnatural.com/httpdocs/wp-inclu in /var/www/vhosts/instala-gasnatural.com/httpdocs/wp-content/plugins/smartsupp-live-chat/vendor/smartsupp/chat-code-generator/src/Smartsupp/ChatGenerator.php on line 332