Test failure RSSExpandedBlackBox2TestCase#testBlackBox: AssertionError [ERR_ASSERTION]: Try harder, Rotation 0 degrees: Too many images failed.

[olleolleolle]

A recent PR #638 was merged, and after that, the build was red, and it turned out to be about a failed test:

  1) RSSExpandedBlackBox2TestCase
       testBlackBox:

      AssertionError [ERR_ASSERTION]: Try harder,       Rotation 0 degrees: Too many images failed.
      + expected - actual

      -false
      +true
      
      at exports.assertEquals (output/tests/test/core/util/AssertUtils.js:19:62)
      at RSSExpandedBlackBox2TestCase.<anonymous> (output/tests/test/core/common/AbstractBlackBox.js:260:35)
      at Generator.next (<anonymous>)
      at fulfilled (output/tests/test/core/common/AbstractBlackBox.js:20:58)

error Command failed with exit code 1.