Slicing problem - Slic3r prusa
It's a nozzle size issue. The model contains a lot of details which is really challenging to print with a 0.4&nbsp;mm nozzle.

A big nozzle is just not able to print such fine details. You should switch to 0.25&nbsp;mm or 0.15&nbsp;mm. Just try to set a smaller nozzle in your slicer.

There is a nice article on Prusa's blog showing the difference in printing details with 0.4mm and 0.25mm: EVERYTHING ABOUT NOZZLES WITH A DIFFERENT DIAMETER, especially chapters Examples of practical use and Printing miniatures.

See the difference: