Not at the moment. I've looked into the issue but haven't found anything concrete pertaining to this specific problem. @IwataNeo if it's possible for you to share access to your server hosting the project, please raise a ticket by emailing us at support@uvdesk.com or visiting support.uvdesk.com. We would have to debug at vendor code level and figure out the complete stack trace to see exactly where things went wrong, as at the moment I'm not able to reproduce this issue. I would also suggest you to share your composer.json & composer.lock file so I can test this against the exact packages you have installed.

The only other relevant log message i found in the shared logs was a deprecation notice indicating there might be a update in the flow of symfony's authentication system which I would need to look into, but if that was the case the issue would have been a lot more noticeable across other installations as well.