Printing small hole, Cura covers it

[CondorMD 0]

Hi, I'm new in 3d print and i use cura. i tried to print this https://www.thingiverse.com/thing:2783012 for my children. I have a problem with the hole for balloon because cura fill all inside and on the top, while other slicer do not. Can you help me? thanks

 

https://drive.google.com/file/d/1wgYb623ayG3EZEAoFMD4fmNm0qu7yyku/view?usp=sharing
https://drive.google.com/file/d/1EOIstUQq2lm4Wr28hlDpT_DRflU4kD9N/view?usp=sharing
https://drive.google.com/file/d/1j4qfKrzliW-MfkMMgK2iz58XvUuoWHCg/view?usp=sharing

[CondorMD 0]

Hi, I'm new in 3d print and i'm sorry for my question, probably easy. I tried to print this https://www.thingiverse.com/thing:2783012 for my children. I have a problem with the hole for air from balloon because cura fill all inside and on the top, while other slicer do not. Can you help me? thanks