@Boyuan-Tian I meet the same problem after I clone the code and `make`, `./pc_pipeline` with the default config.txt  the version is : ``` os: ubuntu 18.04 pcl: 1.12 gcc: 7.5.0 ``` _Originally posted by @hanm2019 in https://github.com/horizon-research/PointCloud-pipeline/issues/2#issuecomment-988494131_