Error CALO: negative energy cluster

The error below appeared 2 times while running over 250k Bs2JPsiPhi events with fastest withoutUT reconstruction. You can find the full log here: https://eoslhcbhttp.cern.ch//eos/lhcb/storage/lhcbpr/logs/Moore/DC_Sim10aU1_Bs2JPsiPhi_LowLumi/lhcb-head.3168_2022-01-29_02:53:22_+0100/run.log

RootCnvSvc                             INFO Removed disconnected IO  stream:49FEF28C-71BA-11EC-8EB4-D85ED3091DBB [root://shifterCred@lhcbxrootd-kit.gridka.de//pnfs/gridka.de/lhcb/LHCb-Disk/lhcb/MC/Upgrade/XDIGI/00153938/0000/00153938_00000075_1.xdigi]
CaloFutureClusterCovarianceAlg.E...   ERROR negative energy cluster
EventSelector                          INFO Stream:EventSelector.DataStreamTool_67 Def:DATAFILE='root://shifterCred@eoslhcb.cern.ch//eos/lhcb/grid/prod/lhcb/MC/Upgrade/XDIGI/00153938/0000/00153938_00000079_1.xdigi' SVC='Gaudi::RootEvtSelector' OPT='READ' IgnoreChecksum='YES'