I want to print a hollow object on a 3D printer, but it produces a full inside

[CemGurbuz 0]

I want to print a hollow object on a 3D printer, but it produces a full inside in Ultimaker Cura. 
How can I fix this problem?
 

 

 

 

Edited June 5 by CemGurbuz

[GregValiant 1,409]

Look in the Mesh Fixes section and make sure "Remove all Holes" is disabled.

If it is, then there may be a problem with the model and it might need repair.

 

Edited May 14 by GregValiant

[Slashee_the_Cow 479]

Go into Special Modes and change Surface Mode to Surface

 

Normal:

Surface:

[gr5 2,265]

It's probably a problem with the model (most likely the normals) but I'd just go with Slashee's solution.

[Rakeem 0]

Have you tried to set the infill at 0% and make sure that walls have a minimum os 2 lines.

[Rakeem 0]

and set top and botton layers at 0, so you have no top or bottm

[Slashee_the_Cow 479]

@Rakeem that might not work if the model file has errors, as @gr5 pointed out it might. If the normals are wrong that won't fix it.