one.com update php-version from 5.6 to 7.3 and I was too late to update my joomla-version. Because of the site doesn't work any more.
The address is www.hakvik.se and below that I have several other pages deployed on subdomains. It is the topdomain which not working.
Do you have the knowledge to fix it, what would it cost and it is very important that my subdomain are not affected in any way.