# Error 500 / PHP Fatal error

**URL:** <https://forum.mautic.org/t/error-500-php-fatal-error/6894>\
**Category:** Product Support\
**Created:** [December 19, 2016, 9:19pm UTC](https://forum.mautic.org/t/error-500-php-fatal-error/6894 "2016-12-19T21:19:31Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![byrge](https://avatars.discourse-cdn.com/v4/letter/b/858c86/32.png) [@byrge](https://forum.mautic.org/u/byrge)\
**Post date:** [December 19, 2016, 9:19pm UTC](https://forum.mautic.org/t/error-500-php-fatal-error/6894/1 "2016-12-19T21:19:31Z")

</div>

Hi,  
  
I’m interested in Mautic and try to install Mautic on a DigitalOcean server. I have a droplet with 1GB ram and tried several times to install Mautic, but so far I still get an error 500. When I check the APache log, I see the following error:

Code:

PHP Fatal error: Uncaught Error: Class 'DOMDocument' not found in /var/www/html/mautic/vendor/symfony/config/Util/XmlUtils.php:52nStack trace:n#0 /var/www/html/mautic/vendor/symfony/dependency-injection/Loader/XmlFileLoader.php(284): Symfony\Component\Config\Util\XmlUtils::loadFile('/var/www/html/m...', Array)n#1 /var/www/html/mautic/vendor/symfony/dependency-injection/Loader/XmlFileLoader.php(41): Symfony\Component\DependencyInjection\Loader\XmlFileLoader-\>parseFileToDOM('/var/www/html/m...')n#2 /var/www/html/mautic/vendor/symfony/framework-bundle/DependencyInjection/FrameworkExtension.php(57): Symfony\Component\DependencyInjection\Loader\XmlFileLoader-\>load('web.xml')n#3 /var/www/html/mautic/vendor/symfony/dependency-injection/Compiler/MergeExtensionConfigurationPass.php(55): Symfony\Bundle\FrameworkBundle\DependencyInjection\FrameworkExtension-\>load(Array, Object(Symfony\Component\DependencyInjection\ContainerBuilder))n#4 /var/www/html/mautic/vendor/symfony/http-kernel/DependencyInjection/MergeExtensionConfigurationPass.ph in /var/www/html/mautic/vendor/symfony/config/Util/XmlUtils.php on line 52

  
The droplet (server) is:  
- Ubuntu 16.04  
- Apache/2.4.18 (Ubuntu) , Server built: 2016-07-14T12:32:26  
- MySQL  
- PHP 7  
  
I tried several possible solutions here in the forum, but so far no luck. Anyone any idea what this error is and how I can solve this?  
Thanks in advance,  
Byrge

---

<div class="post-metadata">

**Author:** ![byrge](https://avatars.discourse-cdn.com/v4/letter/b/858c86/32.png) [@byrge](https://forum.mautic.org/u/byrge)\
**Post date:** [December 19, 2016, 9:19pm UTC](https://forum.mautic.org/t/error-500-php-fatal-error/6894/2 "2016-12-19T21:19:31Z")

</div>

Hi,  
I’m interested in Mautic and try to install Mautic on a DigitalOcean server. I have a droplet with 1GB ram and tried several times to install Mautic, but so far I still get an error 500. When I check the APache log, I see the following error:

```auto
PHP Fatal error: Uncaught Error: Class 'DOMDocument' not found in /var/www/html/mautic/vendor/symfony/config/Util/XmlUtils.php:52nStack trace:n#0 /var/www/html/mautic/vendor/symfony/dependency-injection/Loader/XmlFileLoader.php(284): Symfony\Component\Config\Util\XmlUtils::loadFile('/var/www/html/m...', Array)n#1 /var/www/html/mautic/vendor/symfony/dependency-injection/Loader/XmlFileLoader.php(41): Symfony\Component\DependencyInjection\Loader\XmlFileLoader->parseFileToDOM('/var/www/html/m...')n#2 /var/www/html/mautic/vendor/symfony/framework-bundle/DependencyInjection/FrameworkExtension.php(57): Symfony\Component\DependencyInjection\Loader\XmlFileLoader->load('web.xml')n#3 /var/www/html/mautic/vendor/symfony/dependency-injection/Compiler/MergeExtensionConfigurationPass.php(55): Symfony\Bundle\FrameworkBundle\DependencyInjection\FrameworkExtension->load(Array, Object(Symfony\Component\DependencyInjection\ContainerBuilder))n#4 /var/www/html/mautic/vendor/symfony/http-kernel/DependencyInjection/MergeExtensionConfigurationPass.ph in /var/www/html/mautic/vendor/symfony/config/Util/XmlUtils.php on line 52
```

The droplet (server) is:

- Ubuntu 16.04
- Apache/2.4.18 (Ubuntu) , Server built: 2016-07-14T12:32:26
- MySQL
- PHP 7

I tried several possible solutions here in the forum, but so far no luck. Anyone any idea what this error is and how I can solve this?  
Thanks in advance,  
Byrge

---

<div class="post-metadata">

**Author:** ![JeremyH](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/jeremyh/32/672_2.png) [@JeremyH](https://forum.mautic.org/u/JeremyH)\
**Post date:** [December 20, 2016, 10:06am UTC](https://forum.mautic.org/t/error-500-php-fatal-error/6894/3 "2016-12-20T10:06:09Z")

</div>

Perhaps some PHP libraries are missing, or a package for Symfony.

Did a search on “Symfony\Component\Config\Util\XmlUtils”

Found this: [http://stackoverflow.com/questions/38240820/symfony-error-while-doctrinedatabasecreate](http://stackoverflow.com/questions/38240820/symfony-error-while-doctrinedatabasecreate)

Could try using phpinfo to make sure the necessary PHP packages are installed and enabled.

Jer

---

<div class="post-metadata">

**Author:** ![byrge](https://avatars.discourse-cdn.com/v4/letter/b/858c86/32.png) [@byrge](https://forum.mautic.org/u/byrge)\
**Post date:** [December 21, 2016, 8:13am UTC](https://forum.mautic.org/t/error-500-php-fatal-error/6894/4 "2016-12-21T08:13:55Z")

</div>

Hi JeremyH,  
I rebuilt my server with LEMP. Right now I’m able to configure Mautic, so far so good.  
Thanks for your help though.

Regards,  
Byrge