session setup from computer failed because the security database does not…

When promoting a computer to a domain controller, I got this message:

Source: NETLOGON
Event Log: System
Type: Error
Event ID: 5723
The session setup from computer ‘computername’ failed because the security database does not contain a trust account ‘computername$’ referenced by the specified computer.

USER ACTION
If this is the first occurrence of this event for the specified computer and account, this may be a transient issue that doesn’t require any action at this time. If this is a Read-Only Domain Controller and ‘computername$’ is a legitimate machine account for the computer ‘computername’ then ‘computername’ should be marked cacheable for this location if appropriate or otherwise ensure connectivity to a domain controller capable of servicing the request (for example a writable domain controller). Otherwise, the following steps may be taken to resolve this problem:

If ‘computername$’ is a legitimate machine account for the computer ‘computername’, then ‘computername’ should be rejoined to the domain.

If ‘computername$’ is a legitimate interdomain trust account, then the trust should be recreated.

Otherwise, assuming that ‘computername$’ is not a legitimate account, the following action should be taken on ‘computername’:

If ‘computername’ is a Domain Controller, then the trust associated with ‘computername$’ should be deleted.

If ‘computername’ is not a Domain Controller, it should be disjoined from the domain.

I have no idea what to do here, but it seems safe to ignore as there is no additional account in AD and my new AD controller seems to work.