xCode EXC_算术（代码=EXC_1386_DIV，子代码=0x0）调试

嗨，我的操作启动时出现此调试错误：

EXC_Arithmetic(code=EXC_1386_DIV,subcode=0x0)

我的代码如下：

 // checking if an ad may be shown due to ads frequency for this ad network and this location
            if (placementCountChartboostGameOver % ADS_FREQUENCY_CHARTBOOST_GAME_OVER == 0) {
                mayShowChartboostAdAtLocation = YES;

                if (cKLogEnabled) {
                    CKLog(@"App may show Chartboost Ad at Game Over because placement count is %li and ads frequency at this location is %li.", (long)placementCountChartboostGameOver, (long)ADS_FREQUENCY_CHARTBOOST_GAME_OVER);
                }

            }

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我的调试错误从以下位置开始：placementCountChartboostGameOver%ADS\u FREQUENCY\u CHARTBOOST\u GAME\u OVER==0

ADS\u FREQUENCY\u CHARTBOOST\u GAME\u OVER等于零吗？不等于1。为什么要进行mod 1？mod 1始终为零。您确定ADS\u频率\u图表增强\u游戏结束\u为整数吗？