Issue in running the BloodCell Detection.ipynb

[swathi24prabhu]

IOErrorTraceback (most recent call last)
in ()
----> 1 weight_reader = WeightReader(wt_path)

/content/drive/My Drive/keras-yolo2-master/examples/utils.pyc in init(self, weight_file)
34 def init(self, weight_file):
35 self.offset = 4
---> 36 self.all_weights = np.fromfile(weight_file, dtype='float32')
37
38 def read_bytes(self, size):

IOError: [Errno 2] No such file or directory: 'yolo.weights'

Can you please tell me which pretrained model has to be uploaded?
full_yolo_backend.h5, inception_backend, mobilenet_backend, squeezenet_backend, tiny_yolo_backend these 5 files i have uploaded already, but still am getting same error