help Admin login form freezes in the "loading" state after migration

[tyner]

Hi,

I faced with weird issue after migrating a site between accounts within the same hosting. I followed the official migration guide, corrected configs and etc. In my case, the domain name remained the same. 

So it looks like the site is working, I can open it, but when I try to log in to the admin panel, the login form freezes in the "loading" state and after a while, I am redirected to the error page "500 timeout". 

I enabled the dev mode, but there are no errors either on the page, in the developer console, or in the server logs.. I can't solve this for a few days and tried a lot, also starting from scratch. 

It is worth noting that if enter incorrect credentials, the login form will show an error. That is, the issue occurs only when the credentials are correct. 

My environment:
Prestashop 1.6.1.23
PHP 5.6.
Everything is the same as it was on the old account on the same hosting. Please let me know if you need some additional info.

Can anyone help me to figure out this issue? Thanks a lot for any guidelines

Edited January 28, 2021 by tyner (see edit history)

[Inter Svetainė]

Make sure You did this:

• clean cache (clear everything inside `var/cache/`
• make sure these tables are created in your database `ps_customer_session and ps_employee_session`
• clear browser cookies
• check does user lang exist in Prestashop languages list
• in /modules rename folder one by one to find which module brakes the load.