Hi @jerryliu,
as the error message says, Range is not available when running on multiple threads. Also see the docs.
The default ROOT version available on lxplus has not been built with imt=ON, so multi-threading is not available. On lxplus, I would suggest to use one of the ROOT versions available with LCG views, e.g.
source /cvmfs/sft.cern.ch/lcg/views/LCG_97/x86_64-centos7-gcc8-opt/setup.sh
Cheers,
Enrico