Updating in PS 1.7.7.8.3

[Antti1]

We have a problem with our multishop store. Now we are unable to adjust the products, prices,
information of the products or any pictures at all. At any shop of 3 shops. Updated to PS version 1.7.7.8.3 and PHP at server
is 7.4.27. When we open the cataloque at category level / list of products, we can see the small pictures of the product,
product name & number...
But when clicking some product and opening the info sheet(picture, texts,prices), no picture is shown at all. And no updates allowed.
At different product combinations and prices, unable to update anything.
We have abled/unabled different modules one by one ( also PS modules), no improvment.
Any idea which could cause the problem/problems?
At advanced adjustments in back office, we can find a list of overrides:
    classes/Hook.php
    classes/Link.php
    classes/form/CustomerPersister.php
    classes/controller/FrontController.php
    classes/controller/Controller.php
    classes/db/Db.php
    classes/Product.php
    classes/Media.php
    classes/Dispatcher.php
    controllers/front/ProductController.php
    controllers/admin/AdminCmsController.php
    controllers/admin/AdminManufacturersController.php
    controllers/admin/AdminMetaController.php
    controllers/admin/AdminCategoriesController.php
    controllers/admin/AdminSuppliersController.php
    controllers/admin/AdminCmsCategoriesController.php

Is this normal?

 

[JBW]

On 2/25/2022 at 11:54 AM, Antti1 said:

But when clicking some product and opening the info sheet(picture, texts,prices), no picture is shown at all. And no updates allowed.

Check if there are JS errors in the browser console when doing this

 

On 2/25/2022 at 11:54 AM, Antti1 said:

At advanced adjustments in back office, we can find a list of overrides:

These are many and affecting many core functions of the shop. These are usually installed by mopdules and you can see in the file which module is using it