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Migrating and Upgrading to Joomla! 4.x • upgrading to 4 errors , requested page can"t be found

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I have upgraded to 3.12 and then to 4 (the system says (4.42
however , I cannot get in to start to set it up,
If I go to home, cassioppeia saysthe requested page cannot e found
If I try the toggle menu or dashboard, I get

Call to undefined method Joomla\CMS\Application\AdministratorApplication::isSite()
content
ailed opening required '/home/customer/www/613montreal.com/public_html/components/com_content/helpers/route.php' (include_path='.:/usr/local/php81/pear')
I am not sure, but the system befre I ran the update said there were a number of plugings and extensions to disable, which i did.

I don't what to do?
appreciate for any guidance

Statistics: Posted by ShlomoWer — Mon Jan 29, 2024 9:33 pm



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