I think that if you study the other topics that discuss the isAdmin() or isSite() issue, you will find help about the incompatible third-party extension that you are using and what you can do about it.I have already read several topics but in other cases it was clear that the problem was some incompatible extension.
There are many topics on this forum that discuss this topic. One such topic, for example, is viewtopic.php?t=992969. There are others.
As @gws wrote, there are also articles on the web. You can find more articles if you use Google to search for "isAdmin() errors AND Joomla".
Until you find the extension that causes the error, there is nothing we can do to help you now.
Statistics: Posted by mtgg — Thu Jun 27, 2024 8:44 pm