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ERROR - --> Severity: error --> Exception: Call to undefined function utf8_encode() /var/www/ezlogin/application/libraries/Yubico/Yubico.php 397

 

  You need to install php-xml extension.You can do so on Ubuntu/Debian by using:

[email protected]:~# apt-get install php-xml

[email protected]:~# service apache2 restart

 

And on Centos / Fedora / Red Hat:

[email protected]:~# yum install php-xml

[email protected]:~# service httpd restart