When i run my code it runs but it’s return value is not 0. So i tried debugging mode. And the problem is caused by if(yol[i][j]==' ') part. When compiler comes here, segmentation fault error is shown up. Why is this happening guys?

void randomElma(char yol[32][44]){
    srand(time(NULL));
    int i,j;
    for(i=0;i<32;i++){
        for(j=0;j<44;j++){
            if(yol[i][j]==' '){
                if((rand()%10)==1){
                    yol[i][j]='O';
                }
            }
        }
    }
}

Here is my main function:

int main(int argc, char *argv[]) {
    int N=31, M=43;
    int i=0, j=0;
    char ch;
    int map[32][44];
    char yol[32][44];
    puan=0;
    
    FILE *dosya;
    dosya=fopen("harita.txt","r");
    
    while ((ch = fgetc(dosya)) != EOF){
        yol[i][j]=ch;
        if(ch==' ')
            map[i][j]=1;
        else
            map[i][j]=0;
        if(ch=='\n'){
            i++; j=0;
        }
        else{
            j++;
        }
    }
    
    for(i=0;i<31;i++){
        for(j=0;j<44;j++){
            printf("%d",map[i][j]);
        }
        printf("\n");
    }
    fclose(dosya);
    map[29][1]=1;
    map[29][41]=1;
    
    randomElma(yol[32][44]);
    
    DFS(map,29,1,yol); // 29, 41
    
    return 0;
}

Also i added time.h library