Before installation can continue, the following errors must be resolved:
dom extension is not available
The dom PHP extension is required for Omeka to run. Please check with your server administrator to enable this extension and then try again.
File storage not set up properly.
The following error occurred when attempting to set up storage for your Omeka site: Directory not writable: '/var/www/html/soapnix.com/public/archive/files/thumbnails' Please ensure that all storage directories exist and are writable by your web server.