How do I resolve this error

Couldn’t publish Bonjour se…

NSNetServicesErrorDomain -72000

There’s way too little context here. Please take the time to describe what you are doing where and how. In text, preferably complete sentences.

I opened up the log file and saw this error.

I had tried to connect to a database using Bounjour

You can configure sync to use Bonjour. You can’t “connect to a data afar via Bonjour”. Again: what did you do? Where did you click, what did you type, what is your setup (Mac, iPhone, iPad)?
If you don’t explain what you did and possibly why, wee can’t help you.

As @chrillek says, Bonjour cannot be used to connect to a database on some other machine. It’s a sync method. At this juncture I suggest go back to the Bonjour setup instructions in the “DEVONthink Manual” and in “Help” (same content), supplemented by the following and try again.

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