Hi,
I upgraded from omv 5 to 6 couple of hours ago using the omv-release-upgrade command.
Update went smooth, everything seems to be working (dockers).
But i can't login to the webui 
Keep getting incorrect username or password ?
Code
Fout #0:
OMV\HttpErrorException: Incorrect username or password. in /var/www/openmediavault/rpc/session.inc:151
Stack trace:
#0 [internal function]: OMVRpcServiceSession->login(Array, Array)
#1 /usr/share/php/openmediavault/rpc/serviceabstract.inc(123): call_user_func_array(Array, Array)
#2 /usr/share/php/openmediavault/rpc/rpc.inc(86): OMV\Rpc\ServiceAbstract->callMethod('login', Array, Array)
#3 /usr/share/php/openmediavault/rpc/proxy/json.inc(97): OMV\Rpc\Rpc::call('Session', 'login', Array, Array, 3)
#4 /var/www/openmediavault/rpc.php(45): OMV\Rpc\Proxy\Json->handle()
#5 {main}What I tried to resolve :
- Cleared cache/diff browsers (incognito)
- changed pass in omv-firstaid
- checked reset counter
- checked with df if drive was full (it was not)
- checked if admin was in correct group (uid=998(admin) gid=100(users) groups=100(users),994(openmediavault-admin)
- moved webUI to a random port (sanity check)
at this point i'm a bit at a loss as well...
Help would be appriciated from someone wiser then me 
(sidenote) : SSH is running and I have root access.