Query about the error "simulation.tess and simulation.msh do not match (2D)."

[Culassinoo]

Hello, I have encounter an error when I want to generate a 2d quad mesh. May I ask what is going on and what can I do ?

======================== N e p e r =======================
Info : A software package for polycrystal generation and meshing.
Info : Version 4.7.1-16
Info : Built with: gsl|muparser|opengjk|openmp|nlopt|libscotch (full)
Info : Running on 6 threads.
Info : https://neper.info
Info : Copyright (C) 2003-2022, and GNU GPL'd, by Romain Quey.
Info : No initialization file found (/home/geoir/.neperrc'). Info : --------------------------------------------------------------- Info : MODULE -V loaded with arguments: Info : [ini file] (none) Info : [com line] xx.tess,xx1.msh -showelt1d all -print mesh Info : --------------------------------------------------------------- Info : - Reading arguments... Info : Loading tessellation... Info : [i] Parsing file xx.tess'...
Info : [i] Parsed file xx.tess'. Info : Loading mesh... Info : [i] Parsing file xx1.msh'...
Info : [i] Parsed file `xx1.msh'.
Error : - simulation.tess and simulation.msh do not match (2D).
Aborted (core dumped)