I got the following message which caused OGS6 not to run.
Most likely, the problem is caused by the SF.vtu file (my mesh file). The following shows my mesh, there is a lower-dimensional interface element or LIE fracture in the middle domain. I got the correct .msh file (gmsh v2 ascii) from GMSH (attached in the .zip file). However, when I call GMSH2OGS.exe to convert .msh file to .vtu file, I might lost the LIE fracture elements. This could be why I had the message " [LIE/HM] looking for fracture elements in the given mesh". Any help is greatly appreciated.
FYI, I attached the geometry (.gml), mesh (.vtu), and project file (.prj) for easier troubleshooting.
WenfengM_SingleFracture.zip (7.5 MB)