Efficiency tests in master failing

The master pipeline physics efficiency jobs are failing intermittently (https://gitlab.cern.ch/lhcb/Allen/-/pipelines/3222923). The first trace of these jobs failing are traced back to !561 (merged) (eg. https://gitlab.cern.ch/lhcb/Allen/-/jobs/15914972). Both physics efficiency jobs in the basic CI and in the full CI are failing intermittently at the moment.