I have installed v2.8.1 ce. The installation procedure was successfull and the healthcheck said all in functional state.
If i want to create new items (password | user | group) after login, i´ve got an error >>> token mismatch!
The issue could come from your cookies settings. By default passbolt uses a ‘csrf_token’ cookie to prevent from clickjacking attacks. Do you have any custom cookie policy set in your browser?