New answers tagged joomla-3.9
1
Assuming that your using a rockettheme gantry 4 template, the head renderer is already loaded (as of version joomla 3.7? several years ago in any case) now, and the included file is gone so just comment out the line in both error.php and offline.php
Alternatively you can check for the class so the template would still work in old Joomla if that's a thing.
if ...
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