You comented or erased SN_SIGHT: from line 6904? then copy paste the code above like this:
case SN_SIGHT:
clif_skill_nodamage(src,bl,skill_id,skill_lv,sc_start(src,bl,type,100,skill_lv,skill_get_time(skill_id,skill_lv)));
status_change_start(src,bl,SC_INTRAVISION,10000,skill_lv,0,0,0,skill_get_time2(skill_id,skill_lv),SCSTART_NORATEDEF);
break;
case SM_ENDURE:
clif_skill_nodamage(src,bl,skill_id,skill_lv,
sc_start(src,bl,type,100,skill_lv,skill_get_time(skill_id,skill_lv)));
break;