Erorr upgrade from 1.7.7.0 to 1.7.8.6

[petrixstar]

hello

I upgrade from 1.7.7.0 to 1.7.8.6 and appeared a big ERROR:)

override/classes/Product.php line 0 - Declaration of Product::getFieldsToUpdate() must be compatible with ObjectModelCore::getFieldsToUpdate(): ?array

it"s a old module?

thanks

[musicmaster]

Indeed this looks like you have a module that is not compatible with the latest Prestashop.

Now the task to find out which module.

The first step is opening this override/classes/Product.php file. Sometimes - but not always - overrides contain comments telling you from which modules they come.

If that doesn't work you can try a text search under your modules directory for the word "getFieldsToUpdate"

A final option is disabling modules and looking at the effect.