Erorr/Bug Symfony\Component\Debug\Exception\FatalThrowableErrorPOST /password/email Parse error: syntax error, unexpected '?', expecting variable (T_VARIABLE)

Solusi: - Install & Enable PHP 7.1

#1 This installs php7.1

• sudo a2dismod php7.0
• sudo add-apt-repository ppa:ondrej/php
• sudo apt-get update 
• sudo apt-get install -y php7.1 php7.1-xml php7.1-mysql php7.1-curl php7.1-mbstring

#2 This enables Apache to run php7.1

•  sudo a2dismod php7.0
• sudo a2enmod php7.1
• sudo service apache2 restart