Error : Unknown mesh format `msh22', using `msh' instead

[greentree20131221]

Hi, I tried the following code according to the guide in the documentation

import calfem.geometry as cfg
import calfem.mesh as cfm
import calfem.vis as cfv

g = cfg.Geometry()

g.point([0.0, 0.0]) # point 0
g.point([5.0, 0.0]) # point 1
g.point([2.5, 4.0]) # point 2

g.spline([0, 1]) # line 0
g.spline([1, 2]) # line 1
g.spline([2, 0]) # line 2

g.surface([0, 1, 2])

cfv.drawGeometry(g)
cfv.showAndWait()

mesh = cfm.GmshMesh(g)

mesh.elType = 3          # Degrees of freedom per node.
mesh.dofsPerNode = 1     # Factor that changes element sizes.
mesh.elSizeFactor = 0.15 # Element size Factor

coords, edof, dofs, bdofs, elementmarkers = mesh.create()

cfv.figure()

# Draw the mesh.

cfv.drawMesh(
    coords=coords,
    edof=edof,
    dofsPerNode=mesh.dofsPerNode,
    elType=mesh.elType,
    filled=True,
    title="Example 01"
        )

When running the line coords, edof, dofs, bdofs, elementmarkers = mesh.create() , an error is occured.

FutureWarning: arrays to stack must be passed as a "sequence" type such as list or tuple. Support for non-sequence iterables such as generators is deprecated as of NumPy 1.16 and will raise an error in the future.
  return np.asarray( np.vstack( T * M * CPs[j-1:j+3,:] for j in range( 1, len(CPs)-2 ) ) )

Error : Unknown mesh format msh22', using msh' instead

My environment; Ubuntu 18.04 Python 3.6 gmsh 4.6.0 calfem-python 3.5.3

I googled but, I can't any solution. Could you help me?

[jonaslindemann]

I am using gmsh 4.8.3 and this error is not there.