Only occurred once during testing, was unable to reproduce again, might involve inotify event ordering? This likely happened during pipe refresh after deleting an endpoint. This is most likely a timing issue (I think).
HOPPER /run/user/1000/hopper
CREATE test(1)
CREATE test/test2(2)
OPEN +test1(test)
UP +test1(test)
OPEN -test2(test/test2)
DOWN +test1(test)
CLOSE +test1(test)
Exception: open: No such file or directory: No such file or directory
Only occurred once during testing, was unable to reproduce again, might involve inotify event ordering? This likely happened during pipe refresh after deleting an endpoint. This is most likely a timing issue (I think).