Error 1100: No un-cut fluid cells adjacent to DEM_MI staging area. Unable to setup the discrete solids mass inlet for BC: 1

Hello, everyone. After setting the size and automatically adapting the background, set the basic boundary conditions, but it still displays an error. Can anyone help me? Thank you very much!

Error 1100: No un-cut fluid cells adjacent to DEM_MI staging area.
Unable to setup the discrete solids mass inlet for BC: 1

If you are using an STL file, please verify the normals are pointing in the right direction: 12. Frequently Asked Questions — MFiX 22.3 documentation

Thank you very much. My problem has been solved.