Parse error in Mobile_Detect.php

Hi all, suddenly i got this error when i open my dolibarr today, before it was working fine.

Parse error : syntax error, unexpected ‘const0MOBILE_GRADE_A’ (T_STRING), expecting function (T_FUNCTION) or const (T_CONST) in D:\Doli\dolibarr\www\dolibarr\htdocs\includes\mobiledetect\mobiledetectlib\Mobile_Detect.php on line 49

Anyone know how to fix it?