Hello to everyone.
Whenever I convert a file from msh to pyfrm, the program shows errors such as KeyError pyfr 7, 4348 or similar. Boundary conditions have been adjusted on gmsh and I am using a 4.108 ASCII version 4 format. PyFR version is 2.0.
Thanks fdw, I solved the problem simply ticking options-mesh-general-recombine all triangular meshes on gmsh. The problem has been involved normals orientation.