Site Restoration

#37070 Help with site restoration

Posted in ‘Site restoration’
This is a public ticket

Everybody will be able to see its contents. Do not include usernames, passwords or any other sensitive information.

Environment Information

PHP version
CMS Type
CMS Version
3 and 4
Backup Tool Version
Kickstart version


I am not happy, my previous ticket is lost ...

I am trying to restore my site after a problem of joomla3 to joomla4 migration.

I paid for the pro version of akeeba backup but the restoration just dont work...

I then tried a restoration with kwickstart  with dont work either.

Everything seems to going well during restoration but a the end the site display the same error :

Une erreur s'est produite
0 Class "Joomla\Console\Application" not found
Please help !
the site url is  https:\\   (this field dont work in the formulaire)

Akeeba Staff


please let me understand the steps that occurred:

- you had a Joomla 3 website
- you updated to Joomla 4
- something went wrong and you want to restore your previous backup.
- you restored your backup taken with Joomla 3 on top of your (not work) Joomla 4 website

Is that correct?

If you want to perform a downgrade of Joomla (especially when we're talking about major versions), you have to manually delete all the files in your site. That's because Joomla will add new files, that won't be deleted during the restoration of the backup, so you end up with the old files containing code for Joomla 3 and new files that were added in Joomla 4.

This causes Joomla to break, since it's trying to use both.

If that's the case, I strongly suggest you to download your archive and try to restore it or (even better) create a subfolder in your current website and try to restore it there. In this way you'll be sure that the archive is not corrupted. Then download the archive and store it in a secure place, delete your files and perform the restoration again.

Davide Tampellini

Developer and Support Staff

🇮🇹Italian: native 🇬🇧English: good • 🕐 My time zone is Europe / Rome (UTC +1)
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!


Grazie mille Davide, il metodo ha funzionato.

My site is baxk and alive.


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