I think that the problem is with not finished upgrade. When I delete whole cache folder then I can do the upgrade process again. And during upgrade process I’m getting white screen and in log is this line:
PHP Fatal error: Call to a member function getIndex()
Than when I’m trying to open Upgrade page I’ts again white page.
In mysql log is
MySQL error 1146: Table 'sugarcrm.securitygroups_users' doesn't exist