skill.c:174: 'skill_lv > 0' in function `skill_get_range' Error HELP

[nasagnilac 1]

(07/31/2016 15:41:22) [ Error ] : --- failed assertion --------------------------------------------
(07/31/2016 15:41:22) [ Error ] : skill.c:174: 'skill_lv > 0' in function `skill_get_range'
(07/31/2016 15:41:22) [ Error ] : ./map-server(assert_report+0x77) [0x63ce67]
(07/31/2016 15:41:22) [ Error ] : ./map-server(skill_get_range+0xc3) [0x5a81a3]
(07/31/2016 15:41:22) [ Error ] : ./map-server(skill_get_range2+0x5b) [0x5aa21b]
(07/31/2016 15:41:22) [ Error ] : ./map-server(clif_devotion+0xc6) [0x4b3d86]
(07/31/2016 15:41:22) [ Error ] : ./map-server(status_change_end_+0x141d) [0x60e74d]
(07/31/2016 15:41:22) [ Error ] : ./map-server(do_timer+0x1aa) [0x641cda]
(07/31/2016 15:41:22) [ Error ] : ./map-server(main+0x183) [0x646133]
(07/31/2016 15:41:22) [ Error ] : /lib64/libc.so.6(__libc_start_main+0xfd) [0x7fced62a2d5d]
(07/31/2016 15:41:22) [ Error ] : ./map-server() [0x436689]
(07/31/2016 15:41:22) [ Error ] : --- end failed assertion ----------------------------------------

I need your help to fix this error. Anyone can help me?