Auto labelling on Bounding Box project

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How to reproduce the behaviour

When I am trying to setup an autolabeller on a Bounding Box project, I got a same issue as #2281.
I tried to set it up in admin, but it doesn't seem to be going well.

Is image coded base64 and used by {{ text }} in Request? Any tutorial can teach me how it works?

Your Environment

• Operating System:
• Python Version Used: 3.8.17
• When you install doccano: 2024.06.05
• How did you install doccano (Heroku button etc): pip install doccano