XenForo 2.2.9 - Errors

The following errors occurred while verifying that your server can run XenForo:

• The required PHP extension GD could not be found. Please ask your host to install this extension.
• The required PHP extension cURL could not be found. Please ask your host to install this extension.
• The required PHP extensions for XML handling (DOM and SimpleXML) could not be found. Please ask your host to install these extensions.
• The directory /var/www/html/data must be writable. Please change the permissions on this directory to be world writable (chmod 0777). If the directory does not exist, please create it.
• The directory /var/www/html/internal_data must be writable. Please change the permissions on this directory to be world writable (chmod 0777). If the directory does not exist, please create it.

Please correct these errors and try again.