Error message from Paraview
 

I was getting this error message when I open up my solution in paraview. Maybe it is something you have come across. In this problem I am using swak4foam and openfoam

Generic Warning: In /build/paraview-lH8wFv/paraview-5.4.1+dfsg3/VTK/Rendering/Volume/vtkVolumeTextureMapper3D.cxx, line 680
vtkVolumeTextureMapper3D::vtkVolumeTextureMapper3D was deprecated for VTK 7.0 and will be removed in a future version.

Generic Warning: In /build/paraview-lH8wFv/paraview-5.4.1+dfsg3/VTK/Rendering/VolumeOpenGL/vtkOpenGLVolumeTextureMapper3D.cxx, line 57
vtkOpenGLVolumeTextureMapper3D::vtkOpenGLVolumeTex tureMapper3D was deprecated for VTK 7.0 and will be removed in a future version.