0.51.4 - unable to duplicate Example Dashboard

Hi, just upgraded to 0.51.4 and I'm unable to make a duplicate of Example dashboard, getting following error:

hey, I just tried and was able to duplicate this. Can you open the browser dev tools on the network tab and get the api call that gets fired when you try to do that?

/api/dashboard/1/copy

with status 500 Internal Server Error

Not sure if it makes a difference, but it was an upgraded version from 0.50 to 0.51 not fresh install of 0.51 so the dashboard already existed. Open Source, self hosted version.

Additionally we duplicated that dashboard in the past, and previously made duplicate can be duplicated again, but not the source one