NEED HELP PLEAS (board error)

[assassin2912]

Hey hey i get the following error code and don´t know what to do now  pleas help me:

Can't create/write to file '/var/folders/cf/cfJcVtxCGhCq83CDMXIENk+++TI/-Tmp-/#sqle5_2e0_0.MYI' (Errcode: 13)
File: /Applications/XAMPP/xamppfiles/htdocs/forum/Sources/Subs-Boards.php
Line: 1047

al files in the folder are allowed to write ^