TypeError: RadarPointCloud object not iterable

[sheetal39]

Trying to run the code and first ran into an error when calling from_file_multisweep() in nuscenes_generator.py under data_processing/generator. It was being called with an unknown parameter "merge." When I removed it, it led to the following error-

Traceback (most recent call last):
File "train_crfnet.py", line 434, in
main()
File "train_crfnet.py", line 398, in main
File "/home/iot/anaconda3/lib/python3.6/site-packages/keras/legacy/interfaces.py", line 91, in wrapper
return func(*args, **kwargs)
File "/home/iot/anaconda3/lib/python3.6/site-packages/keras/engine/training.py", line 1418, in fit_generator
initial_epoch=initial_epoch)
File "/home/iot/anaconda3/lib/python3.6/site-packages/keras/engine/training_generator.py", line 181, in fit_generator
generator_output = next(output_generator)
File "/home/iot/anaconda3/lib/python3.6/site-packages/keras/utils/data_utils.py", line 601, in get
six.reraise(*sys.exc_info())
File "/home/iot/anaconda3/lib/python3.6/site-packages/six.py", line 703, in reraise
raise value
File "/home/iot/anaconda3/lib/python3.6/site-packages/keras/utils/data_utils.py", line 595, in get
got pcs and times
<nuscenes.utils.data_classes.RadarPointCloud object at 0x7fc104a259b0>
inputs = self.queue.get(block=True).get()
File "/home/iot/anaconda3/lib/python3.6/multiprocessing/pool.py", line 644, in get
raise self._value
TypeError: 'RadarPointCloud' object is not iterable

Any help resolving this issue would be greatly appreciated!