There are a few requirements your system needs to meet to be able to use RO CSVI.
- PHP version 7.1 or higher
- MySQL version 5.1 or higher with MySQLi Database Type
- Apache 1.3 or higher
- RO CSVI runs on Joomla 3.8.0 or higher
- GD 2.0 library if you want to automatic resize thumbnails
- Extension specific requirements can be found on the download page of the extension