Map server crash due to sc_dancing

[DK77]

Hello Guys , im having issue with map server crash

(06/07/2021 22:58:20) [ Debug ] : status_change_end: SC_DANCING is missing skill unit group (val1=655680, val2=1358, val3=18, val4=0, timer=157, tid=-1, char_id=150889, map=xmas, x=146, y=129). Please report this!
(06/07/2021 22:58:20) [ Debug ] : skill_delunitgroup: group is NULL (source=status.cpp:13580, status_change_end_)! Please report this! (#3504)

 

Its happen 3 times , i already search on rathena , and found same issue with this . How to fix this issue ?

	https://github.com/rathena/rathena/pull/3247/files/db831031bfaa79dc7eadfc1d96c32b9688fa16ab
	

 

[DK77]

here are the status.cpp 13580

                    if( group == NULL ) {
                        ShowDebug("status_change_end: SC_DANCING is missing skill unit group (val1=%d, val2=%d, val3=%d, val4=%d, timer=%d, tid=%d, char_id=%d, map=%s, x=%d, y=%d). Please report this!\n",
                            sce->val1, sce->val2, sce->val3, sce->val4, sce->timer, tid,
                            sd ? sd->status.char_id : 0,
                            mapindex_id2name(map_id2index(bl->m)), bl->x, bl->y);
                    }
                    sce->val2 = 0;
                    skill_delunitgroup(group);  //13580 line
                }