Rich Media Preview intermittent failures

I hope someone can identify a way to make this less fragile.

iex(pleroma@bikeshed)21> Pleroma.Web.RichMedia.Parser.parse("https://vimeo.com/331908835") {:error, "Cachex error: %FunctionClauseError{args: nil, arity: 2, clauses: nil, function: :set_ttl_based_on_image, kind: nil, module: Pleroma.Web.RichMedia.Parser}"}