You need to install vcredist ( Included at the game client folder )

You need to download this file and put it at your game/windows folder ( Fixed by a Player )

https://www.dll-files.com/atiumdag.dll.html

Or

You need to copy the file with name: dbghelp.dll and make 3 copy of it and change its name to

dbghelp_1.dll

dbghelp.old.dll   

dbghelp_old.dll