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Error: 0 on upgrade to Joomla 4

Asked by Graham Wilkins 3 years ago Last activity 3 years ago

I have just upgraded Qubic to Joomla 4, I can access the back office but I get the following error when I open the website:
Cannot access protected property Joomla\CMS\Menu\MenuItem::$params

I cleared browser cashe, this appeared to resolve the problem sufficiently for me to add my user credentials (the site is not live). It was not possible to repeat this action without clearing the cashe again.

I have reverted to php version 8 having tried 7.3 - 7.4 - 8.1 & 8.2 but this has no impact.

I have tried to add/change Users but I get the follwing error:
An error has occurred.
Call to undefined method Joomla\CMS\Application\AdministratorApplication::isAdmin()

I can add new articles and amend extsting articles.

Accepted answer

Marked as the solution
Toufiq Senior Staff
3 years ago

One of override addon occurred the problem. Now, it has been renamed and works fine. Thanks

8 more replies

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Toufiq Senior Staff
3 years ago

Hi there,

I appreciate you reaching out. I sincerely apologize for this oversight. Will you please provide me the Joomla administrator access to check the issue? I will check & get back to you soon. 

Username and password do not match or you do not have an account yet.

-Thanks

Graham Wilkins Asked this
3 years ago

Hi, I had just changed my password, sorry, my error. In the meantime I have created a SuperUser accound for you. I had also tested a different template, it worked. So perhaps I have incorrectly formatted the upgraded template???

Toufiq Senior Staff
3 years ago

Please check now and let me know. Thanks

Graham Wilkins Asked this
3 years ago

Thankyou very much.

Graham Wilkins Asked this
3 years ago

Hmmmmmm! I'm a little frustrated because, after you addressed the issue for me I continued to work on the site, attempting to add a still and a small moving image into the appropate placeholder in the template.

This immediately crashed the site, I cannot recover from this.

Also the slide show is, once again, missing from the interface.

Toufiq Senior Staff
3 years ago

Check now. Thanks

Graham Wilkins Asked this
3 years ago

Thank you, can you advise if this is a result of something I'm doing?

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