From commons-l:

GWtoolset is giving me the following error message:

⧼An unknown error occurred in storage backend "local-swift-codfw". tmp path: /tmp/URLe255a6460b14.urlupload_ ⧽ original URL: https://www.openbeelden.nl/files/10/04/1004220.1004209.John_List.ogv evaluated URL: https://www.openbeelden.nl/files/10/04/1004220.1004209.John_List.ogv.

The ⧼⧽ suggests that something tries to treat some error message text as a message key.