ZeroDivisionError: float division by zero

[mehmetanilesen]

Running evaluation epoch 0001 / 0061: 0it [00:00, ?it/s]
Traceback (most recent call last):
File "run.py", line 329, in
main(config, log_dir, isTrain)
File "run.py", line 48, in main
eval_one_epoch(sess, ops, model, dataset, epoch, config['train']['epochs'])
File "run.py", line 237, in eval_one_epoch
avg_loss = loss_sum / float(total_seen / model.batch_generator.num_points)
ZeroDivisionError: float division by zero

While training the standford_indoor data at running training epoch 001/061, I got this error. How could i fix this error?