ValueError: high <= 0

[Mustafa-AbdulRazek]

@hwyncho , I have run your code for a research point but got an error related to GA-DCGAN model,
Traceback (most recent call last):
File "GECCO-2019-Keras\main.py", line 46, in
gan.train(images, epochs=600, batch_size=1024, with_ga=True, debug_mode=True)
File "GECCO-2019-Keras\gan\base_class.py", line 157, in train
self._train_on_batch(images.copy(), batch_size, with_ga)
File "GECCO-2019-Keras\gan\base_class.py", line 120, in _train_on_batch
generated_img = self._run_ga(generations=32, population_size=len(batch_img))
File "GECCO-2019-Keras\gan\base_class.py", line 68, in _run_ga
point = np.random.randint(0, int(sum_fitness))
File "mtrand.pyx", line 746, in numpy.random.mtrand.RandomState.randint
File "_bounded_integers.pyx", line 1338, in numpy.random._bounded_integers._rand_int32
ValueError: high <= 0

Note that this error has been shown after some epochs? could you please let me know how to solve it ?