Hi everyone, im try print this part two times ang got problem on both,

Hi everyone, im try print this part two times ang got problem on both, can someone help me?

Im using prusa i3 and slic3r

What is the issue we are looking at in the pic?

Open layer in a midle, right side, like a broke

you are printing too hot which causes the layers to warp. Also make sure there is NO air ventilation at all arround your printer (no open doors,windows and stuff)