ja-company template. I did a full backup of my web site then upgraded to Joomla 4. This broke the site. I then restored the site however it broke the backend. Errors about missing files and cannot access many menu items. I contacted the Joomla 4 user group. I then took a copy of Joomla 4 to my offsite laptop and attempted to install the T4 framework and my original ja-company. ja-company will no longer upgrade. This gives a Class 'JError' not found on the front-end. I know that T4 is not supported yet? What should I do?