I am trying to install the plugin and activate it so that I can create content types. As soon as I install the plugin and try to activate it, the site backend goes down and the Admin Dashboard will start throwing an error. After deleting the plugin folder manually using FTP, the site will start working normally again.
I need help in resolving this. I have attached the screenshot and also the error log for your reference.
The error states that the function simplexml_load_file is undefined.
This is a core PHP function (hidden link), and if it is not available then I suggest you contact your host to check the php.ini settings.
Ordinarily it would be available. You can add a simple file phpinfo.php to your root directory with the following content:
<?php
phpinfo();
?>
When you visit site.com/phpinfo.php it will show the configuration for PHP, and if you search simplexml you should find it enabled (screenshot). If not, please ask your host about it.