Synology docker gitlab 500 error

Synology Docker Gitlab Version 11.11.8-0055

admin page cannot be saved.

/admin/application_settings#~~ 500 error & system hook page 500 error.

ssh : gitlab# bundle exec rake cache:clear -> Not solved.

Anyone who knows how to solve it would be appreciated if you could help me.

I met the same issue, waiting for the solution, thx in advance if any folks give a hint.