Strange, unknown file is displayed

For a few days now, every time I open Devonthink to Go, this message appears about a file that I can neither assign nor open. Does anyone have any information or help?

What version of operating system and DEVONthink To Go are you running?

iPadOS 17.4

And DEVONthink To Go?

It is DTTG on the iPad

I am aware of that. What version is it? Tap the ? in the bottom toolbar.

Sorry. DTTG 3.8.1

No worries!
On DEVONthink To Go’s databases screen, select ? > Contact Us to start a support ticket. Thanks!

Done. I think I accidentally sent it twice

No problem. I’ll remove the redundant one, as needed.