When I finish installing the game and the patch, everything is normal but when I give it to execute the shortcut, this comes out
False positive. Add the folder containing MapleRoyals as an exception in your antimalware program. (It looks like you're running Malwarebytes.) You can also consult Making MapleRoyals an Exception in Windows Defender for more information if you have more than one antivirus/antimalware program running.