This also means "searching for an exit", but Duolingo didn't accept it.
That was my answer as well.
"Seeking an exit" was accepted.
I think this all the time when a particular coworker ambles into my office....
I put 'in search of a way out' - that would be a more likely sentence. Way out is used as frequently as exit (if not more so). Exit means way out. I shall report it