Traceback (most recent call last):


 "keras_retinanet/bin/train.py", line 483, in <module>

main()


 "keras_retinanet/bin/train.py", line 442, in main

weights = backbone.download_imagenet()


 "keras_retinanet/bin/../../keras_retinanet/models/resnet.py", line 55, in download_imagenet

return keras.applications.imagenet_utils.get_file(
AttributeError: module 'keras.applications' has no attribute 'imagenet_utils'

Traceback (most recent call last):


 "/Volumes/projects/pyOCD-flit/pyocd/__main__.py", line 402, in run

self._COMMANDS[self._args.cmd](self)


 "/Volumes/projects/pyOCD-flit/pyocd/__main__.py", line 808, in do_commander

PyOCDCommander(self._args, cmds).run()


 "/Volumes/projects/pyOCD-flit/pyocd/commands/commander.py", line 65, in run

if not self.connect():


 "/Volumes/projects/pyOCD-flit/pyocd/commands/commander.py", line 164, in connect

probe = ConnectHelper.choose_probe(


 "/Volumes/projects/pyOCD-flit/pyocd/core/helpers.py", line 138, in choose_probe

allProbes = ConnectHelper.get_all_connected_probes(blocking=blocking, unique_id=unique_id)


 "/Volumes/projects/pyOCD-flit/pyocd/core/helpers.py", line 82, in get_all_connected_probes

allProbes = DebugProbeAggregator.get_all_connected_probes(unique_id=unique_id)


 "/Volumes/projects/pyOCD-flit/pyocd/probe/aggregator.py", line 58, in get_all_connected_probes

probe = cls.get_probe_with_id(unique_id, is_explicit)


 "/Volumes/projects/pyOCD-flit/pyocd/probe/picoprobe.py", line 339, in get_probe_with_id

probe = PicoLink.enumerate_picoprobes(unique_id)


 "/Volumes/projects/pyOCD-flit/pyocd/probe/picoprobe.py", line 110, in enumerate_picoprobes

return PicoLink(core.find(custom_match=FindPicoprobe(uid)))


 "/Volumes/projects/pyOCD-flit/pyocd/probe/picoprobe.py", line 59, in __init__

self._probe_id = dev.serial_number
AttributeError: 'NoneType' object has no attribute 'serial_number'
