(Hopefully) fix #776 by returning empty responses on not found file (#789)
(Hopefully) fix #776 by returning empty responses on not found file (#789)

Couldn't reproduce locally.
As the failure was only ever JRuby, one test and the gif at that
(which shouldn't matter for the result of the test as a whole)
decided to just roll with it with an empty response and log
when it happens so that we could track other failures back to it.
colszowka/simplecov,colszowka/simplecov