tensorflow Process finished with exit code 139 (interrupted by signal 11: SIGSEGV) run model by data generator

Question

I build a sequential model in Keras, when I use generator for the validation_data input, after 25 Epochs, the below error appears:

"Process finished with exit code 139 (interrupted by signal 11: SIGSEGV)"

 model.fit_generator(generator=trainGen, validation_data=validationGen , validation_steps=1, epochs=2000, steps_per_epoch=1)