Could you share your sogo.conf? Looks like something can be wrong with it. Mind the passwords.

{
        SOGoProfileURL = "postgresql://sogo:********@localhost:5432/sogo/sogo_user_profile";
        OCSFolderInfoURL = "postgresql://sogo:********@localhost:5432/sogo/sogo_folder_info";
        OCSSessionsFolderURL = "postgresql://sogo:********@localhost:5432/sogo/sogo_sessions_folder";
        OCSEMailAlarmsFolderURL = "postgresql://sogo:********@localhost:5432/sogo/sogo_alarms_folder";
        OCSStoreURL = "postgresql://sogo:********@localhost:5432/sogo/sogo_store";
        OCSAclURL = "postgresql://sogo:********@localhost:5432/sogo/sogo_acl";
        OCSCacheFolderURL = "postgresql://sogo:********@localhost:5432/sogo/sogo_cache_folder";

        SOGoMailingMechanism = smtp;
        SOGoSMTPServer = "localhost";
        SOGoSMTPAuthenticationType = "PLAIN";
        SOGoDraftsFolderName = Drafts;
        SOGoSentFolderName = Sent;
        SOGoTrashFolderName = Trash;
        SOGoJunkFolderName = Junk;
        SOGoSieveServer = sieve://127.0.0.1:4190;
        SOGoAppointmentSendEMailNotifications = YES;
        SOGoACLsSendEMailNotifications = YES;
        SOGoFoldersSendEMailNotifications = YES;
        SOGoCalendarDefaultRoles = (
                PublicViewer,
                ConfidentialDAndTViewer
        );

        SOGoPageTitle = "OpenMandriva Mail Server";
        SOGoVacationEnabled = YES;
        SOGoEnableEMailAlarms = YES;
        SOGoForwardEnabled = YES;
        SOGoSieveScriptsEnabled = YES;
        SOGoMailAuxiliaryUserAccountsEnabled = YES;
        SOGoMailMessageCheck = every_minute;
        SOGoMailCustomFullName = "OpenMandriva user";
        SOGoMailCustomFromEnabled = YES;
        SOGoMailAuxiliaryUserAccountsEnabled = YES;
        SOGoFirstDayOfWeek = 1;
        SOGoMemcachedHost = 127.0.0.1:11211;

        SOGoLanguage = English;
        SOGoTimeZone = Europe/Zurich;

        SOGoUserSources =
        (
                {
                        type = sql;
                        id = directory;
                        viewURL = "postgresql://mail:********@localhost:5432/mail/users";
                        canAuthenticate = YES;
                        isAddressBook = YES;
                        userPasswordAlgorithm = sha256;
                }
        );

}

The various %quot;s in there are actually quotation marks "

It crashes the same way if I rename sogo.conf to sogo.conf.disabled and try to start without any config in place.

It's a problem with one of the underlying libraries -- I just updated the whole underlying stack (libobjc 2.2.1, gnustep-make 2.9.2, gnustep-base 1.30.0), then rebuilt sope and sogo against it, and it's working now without problems.