[solved] FatalErrorException

[Frits van Leeuwen]

Hello everyone,

I tried to update from Prestashop 1.7.8.11 naar 8.2.1 . Unfortunately, this didn't work. I was able to access the back office, but I could not open the front-site.
After many hours of struggling, I decided to restore the backup. However, I don't know what they did wrong, but now the front-end site works, but the back-end site doesn't.
I can access the database, and that's where I managed to disable the front-end site.
I turned on the debug. and I get this message:
 

(1/1) FatalErrorException

Error: Class PrestaShopBundle\Form\Extension\ModifyAllShopsExtension contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (Symfony\Component\Form\FormTypeExtensionInterface::getExtendedType)

in ModifyAllShopsExtension.php line 49

How can I fix it?

Edited July 25 by Frits van Leeuwen (see edit history)

[ps8modules]

Hi.

Because there is confusion in the src and vendor folders. Download your version of Prestashop, unzip it on your computer, delete the src and vendor folders on FTP, then upload these two folders from your computer to FTP and finally delete the var/cache/prod folder and if it exists, delete var/cache/dev.

[Frits van Leeuwen]

Thanks for the quick reply. I went through all the files and checked the date and time. If it contained the fatal date and time, I had to check if the file already existed. If not, I deleted it. If it did, I overwrote it with the older version.
But that's a lot of work. I'm halfway through now, and it seems to be working.
My hoster finally wants to do what they should have done: restore the last good backup. So that's what's going to happen now.

[ps8modules]

It is certainly faster to delete the entire folder and then upload it from the unpacked archive. The way you're doing it is tedious and you can make a mistake.

Edited July 25 by ps8modules (see edit history)

[Frits van Leeuwen]

It's fixed now, Thank you.