Page 500 error after change disable all overrides and Disable non PrestaShop modules to yes

[Esty]

Hi;

I have prestashop 1.6.17 and I go to the admin and changed the two option:

"disable all overrides" and "Disable non PrestaShop modules"  to yes in order to check a problem,

But after I press "Save" the site  crashed. and I got a 500 page in site and admin.

I tried to change the rows with 'PS_DISABLE_OVERRIDES' and 'PS_DISABLE_NON_NATIVE_MODULE'  to  value '0' or 'null' but its not help.

when I set @ini_set('display_errors', 'on');

I see the error : 

Fatal error: Call to undefined method Shop::initialize() in /config/config.inc.php on line 115.

Please help me!!!!

Thanks

Edited February 12, 2020 by Esty (see edit history)