J4 PHP8 Call to undefined method Joomla\CMS\Application\AdministratorApplication::isAdmin()

Hello, big thanks for ChronoForms, great work! I use this for many years.
Now, after clean (new) installation of Joomla 4.0.3 on Apache/PHP8 i install "chronoforms_v7.0.7.zip" and Joomla is not operational at all :-(
Clicking of any options makes error, it is unable login/logoff.
​

0 Call to undefined method Joomla\CMS\Application\AdministratorApplication::isAdmin()

Something like
https://github.com/joomla/joomla-cms/issues/24642
https://forum.joomla.org/viewtopic.php?t=988008

Hi NordicJoomla,
​
It looks as if the calling code needs to be changed to

AdministratorApplication::isClient('administrator')

​
Unfortunately I am not familiar with the CFv7 code and at the moment don't have a way to search to see where the change needs to be made :-(
​
Bob

NordicJoomla, Bob is correct -
there are several places in different files (if I remebmber correctly) you should adjust this. However that will not be the only error.

In Joomla 4 there are many depreciated methods that should be replaced - thats why I created this post -
https://www.chronoengine.com/forums/posts/t109619/chronoforms-with-php8-and-joomla-4
​
Please, do not hesitate to write there when you find any solution.
​
Elita

P.S. this code should be adjusted in CF6 and CCv6 also. but - as I said, that won't let the CF run on Joomla 4.