libc abi.dylib: terminate_handler unexpectedly threw an exception

- (NSInteger)giftCountFullScreen{
NSArray *arr = [NSMutableArray arrayWithArray:self.arrayGiftGruop];
for (id data in arr) {
BaseGiftItem *item = (BaseGiftItem *)data;
if ([item.image isEqualToString:@"gift_bamboo"] && [item.price isEqualToString:@"1000"]) {
[arr removeObject:item];
}
}
return arr.count;
}