Class 'DOMDocument' not found

Solution 1:

You need to install the DOM extension. You can do so on Debian / Ubuntu using:

sudo apt-get install php-dom

And on Centos / Fedora / Red Hat:

yum install php-xml

If you get conflicts between PHP packages, you could try to see if the specific PHP version package exists instead: e.g. php53-xml if your system runs PHP5.3.

Solution 2:

PHP 7.0:

Ubuntu: apt-get install php7.0-xml
CentOS / Fedora / Red Hat: yum install php70w-xml

PHP 7.1:

Ubuntu: apt-get install php7.1-xml
CentOS / Fedora / Red Hat: yum install php71w-xml

PHP 7.2:

Ubuntu: apt-get install php7.2-xml
CentOS / Fedora / Red Hat: yum install php72w-xml

PHP 7.3:

Ubuntu: apt-get install php7.3-xml
CentOS / Fedora / Red Hat: yum install php73w-xml

PHP 7.4:

Ubuntu: apt-get install php7.4-xml
CentOS / Fedora / Red Hat: yum install php74w-xml

PHP 8.0

Ubuntu: apt-get install php8.0-xml
CentOS 8 [with php:remi-8.0 enabled]: dnf install php-xml

Solution 3:

PHP8: (latest version)

sudo apt-get install php8.0-xml

PHP7:

sudo apt-get install php7.1-xml

You can also do:

sudo apt-get install php-dom

and apt-get will show you where it is.

Solution 4:

I'm using Centos and the followings worked for me , I run this command

yum --enablerepo remi install php-xml

And restarted the Apache with this command

sudo service httpd restart

Solution 5:

Package php-dom is a virtual package provided by:
  php7.1-xml 7.1.3+-3+deb.sury.org~xenial+1
  php7.0-xml 7.0.17-3+deb.sury.org~xenial+1
  php5.6-xml 5.6.30-9+deb.sury.org~xenial+1
You should explicitly select one to install.

In case anyone using 5.6 versions then go with this way