Prestashop: Upgrade 1.7.6.4 to 1.7.6.8 cant login backoffice, or client login

[jpcoke]

I´ve upgraded from 1.7.6.4 to 1.7.6.8 on two websites in the same server... (1-click upgrade 4.10.1 version module -

one went fine.... the other, i cant login in backoffice....

when i try to access only get this:

Front office apparently works well... until i try to login as a costumer...

When i do, i get a 500 blank page...

Activated "PS_MODE_DEV_', true", and when i do the costumer login i get this:

I've tried multiple solutions after searching online, such as the one of creating ps_employee_session and ps_customer_session, they we´re there...
emptied the chache folder
accessed through incognito...
nothing worked...

The website only haved the prestashop modules activated, the upgrade on 1-click didn´t show any errors.. there are no errors related to this on cpanel error log...

Here are the settings used ( used on both sites and removed from the other site i upgrade with no issues - i use the same settings on both)

Please help...

Additional information

• PrestaShop version: 1.7.6.8
• PHP version: 7.2.34

[hibatallahAouadni]

Hi @jpcoke

Please next time follow the Github template. Read more about how we expect the issues to be handled here

Could you please provide the log file: /admin-dev/autoupgrade/tmp/

Thanks!

[matks]

@jpcoke I notice you have a limited memory size of 128M

We recommend allocating 256M for PrestaShop (see https://devdocs.prestashop.com/1.7/basics/installation/system-requirements/)

[matks]

@jpcoke Your error message says "Failed opening required ...SessionInterface"

Class SessionInterface is a new php class introduced in PS 1.7.6.6 to fix a security issue. Can you check it is on your shop ? In folder src/Core/Session

see https://github.com/PrestaShop/PrestaShop/blob/1.7.6.7/src/Core/Session/SessionInterface.php

[jpcoke]

Hi

Thank you so much for the attention and help

It was indeed the "session" folder and the php file missing... It should be created by the upgrade... i guess...

Also increased the memory limit, but it wasn't whats causing the issue, because i increased it after solving the issue.

Thank you so much once again.

Hope it helps it others with same issue.