Solved Can't create post via API from guest user (no username)

[ivan133]

Hi!
I'm trying to create a post via API by the guest.
I've tried the guest key and superuser key.
I keep getting:
code": "please_enter_valid_name"
How can I create a post with the guest user?
I can create guest posts via the web interface, so I'm sure that permissions are correct.
Also if I set XF-Api-User in the header it will work (will create a post on behalf of the user).

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