Welcome to the ROOT Forum!
I’m not familiar with ROOT from cvmfs , maybe @Danilo or @jblomer can help
Or maybe this post can help: 'TUnfold.h' file not found - #7 by jonas
[bellenot@lxplus932 ~]$ source /cvmfs/sft.cern.ch/lcg/views/LCG_105/x86_64-el9-gcc11-opt/setup.csh
[bellenot@lxplus932 ~]$ root
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| Welcome to ROOT 6.30/02 https://root.cern |
| (c) 1995-2023, The ROOT Team; conception: R. Brun, F. Rademakers |
| Built for linuxx8664gcc on Dec 20 2023, 19:16:00 |
| From heads/master@tags/v6-30-02 |
| With g++ (GCC) 11.3.0 |
| Try '.help'/'.?', '.demo', '.license', '.credits', '.quit'/'.q' |
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root [0]