You are runing PHP version: 5.5.27<br>Please Update your PHP version to 7.2 or above. (7.3 is recommended)<br><h5>For Ubuntu 16</h5>sudo add-apt-repository ppa:jczaplicki/xenial-php74-temp<br>sudo apt-get update && sudo apt-get upgrade<br>sudo apt-get install php7.4 libapache2-mod-php7.4 php7.4-mysql php7.4-curl php7.4-gd php7.4-intl php7.4-zip php7.4-xml -y<br>sudo update-alternatives --set php /usr/bin/php7.4 && sudo a2dismod php7.0 && sudo a2enmod php7.4<br>sudo /etc/init.d/apache2 restart