Why Yolov4 model's showing completed training process but actually it did not trained on the custom data

Question

I am trying to run the Yolo v4 model on custom data set. I think all the folder configuration is alright. When I execute the code it start training but it's stopped training after a while and looks like training is completed, But actually it did not trained no the data. And this is the pictures of the training. How can i solve it. Here is the image