I am not able to unload mesh the error code it shows is this 60ef53a5

the did meshing in fluent and then converted that ASCII format mesh to openfoa mesh then i compressed the constant folder in .ZIP format but when i start to upload the mesh file it shows internal error with variopus codes
what to do please explain]

Hey there, and thanks for using the forum.

Mesh upload is a complex process, prone to many errors.

The best suggestion I can give you is to upload your 3D model and use the Standard Mesher. It has many convenient features that should help you to have a more stable simulation: