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We are currently starting to looking at Joomla 4 on our test system.
We have upgraded to Joomla 3.9
When we run the Joomla 4.0 check we get a warning about potential upgrade issue (see screen shot attached).
We have the latest version of Admin tools.
Any ideas on if we have to or how we resolve this prior to moving to Joomla 4.0
Thanks
David Unwin - London UK