Hi there, for the fair price I will fix all the errors, upgrade your joomla to the latest version and make it modern and responsive so it would be compatible with all devices types. First you need to check if your server supports new version of PHP (7.1+) needed for the latest joomla (I can do that too if you choose me to work on this project). If your PHP is old, I can help with upgrade. Thanks in advance, Branko