I reinstalled gtsam and compiled successfully, but the command failed.

[af-doom]

Only the command of livox point cloud reports an error, the rest runs normally
sudo ./bin/demo_reg configs/hit_ms/gem_pagor.yaml examples/data/livox/source.pcd examples/data/livox/target.pcd
./bin/demo_reg: error while loading shared libraries: libmetis-gtsam.so: cannot open shared object file: No such file or directory

[qiaozhijian]

Could you check if there is libmetis-gtsam.so in your system? Use shell command like "locate"