[Shader::Shader] Error compiling fragment shader

[gxxzs]

roslaunch blort_ros learnsifts.launch
[Shader::Shader] Error compiling fragment shader "/home/zs/pcl_ws/src/perception_blort/blort_ros/Tracker/shader//gauss.frag"No program
[blort_learnsifts-1] process has died [pid 3734, exit code -11, cmd /home/zs/pcl_ws/devel/lib/blort_ros/learnsifts /home/zs/pcl_ws/src/perception_blort/blort_ros /blort_camera:=/stereo/left/camera_info /blort_image:=/stereo/left/image __name:=blort_learnsifts __log:=/home/zs/.ros/log/6bd03c7c-44fc-11eb-8b0e-9822efe4f245/blort_learnsifts-1.log].
log file: /home/zs/.ros/log/6bd03c7c-44fc-11eb-8b0e-9822efe4f245/blort_learnsifts-1*.log