7720 Exception

Halcon 更换为自己的训练数据，矩形框标注数据，设定如下超参数，也多次修改学习率，momentum等超参数，训练过程中偶发7720 异常 Training step failed. This might be caused by unsuitable hyperparameters，有没有大神遇到过相似问题，出错位于下面依据代码，出错时TrainResult中loss很大

1. train_dl_model_batch (DLModelHandle, DLSampleBatch, TrainResult)
   
2. 
   
3. BatchSize := 1
   
4. InitialLearningRate := 0.0010
   
5. Momentum := 0.85
   
6. NumEpochs := 40
   
7. EvaluationIntervalEpochs := 1
   
8. ChangeLearningRateEpochs := 30
   
9. ChangeLearningRateValues := InitialLearningRate * 0.1
   
10. WeightPrior := 0.0001
    
11. 
    
12. set_dl_model_param(DLModelHandle,'max_num_detections',20)

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