Slicing creating holes in print

[abvac73189 0]

I have a model that does not have any gaps in the surfaces, but once I slice it, there are holes created. They occur where two surfaces meet, essentially the model is a human figure under a cloak. So where the cloak rests on the arms a hole is formed rather than closing the surface. Is there a setting I should be changing to avoid it functioning like this? I have to use 15.04 since I have a M3D printer and use the Cura Engine in Octoprint.
Any advice/assistance is appreciated 

[gr5 2,265]

Please show a screenshot of the model in normal view and also slice view.

[abvac73189 0]

1 -

the .stl in a model viewer

 

 

2 -

showing that the model has shape under outer layer and where the surfaces meet/come in close proximity of each other

 

3 -

a section of the gcode showing a hole where there should not be, in the general area shown in image 2

 

4 -

the result on an actual print

Edited February 19, 2019 by abvac73189
removed extra photos

[kmanstudios 1,120]

Looks like the walls are too thin.

[abvac73189 0]

41 minutes ago, kmanstudios said:

Looks like the walls are too thin.

What can I do to fix this? Should I be looking at the Cura settings or is this an issue with the model itself?

[kmanstudios 1,120]

Just thicken the areas that are slicing as holes in the model itself. Walls need to be at least 1.5 (really low end) to 2 times the width of the nozzle to be properly recognized.

[louilou 0]

I had the same issue that you are having. The gaps (for me) disappeared after disabling ‘Enable Coasting’. I think it may just have been poorly tuned coasting values.