ninja: error: unknown target 'HTMLSummary'

When running the tests for a project in the hackathon setup, I get the following error in teh Detector project:

100% tests passed, 0 tests failed out of 3

Total Test time (real) =   4.89 sec
cmake --build /workspace/Detector/build.x86_64-centos7-gcc9-opt --target HTMLSummary
ninja: error: unknown target 'HTMLSummary'
make: *** [test] Error 1