TypeError: a bytes-like object is required, not 'str'

[yifengji]

TypeError: a bytes-like object is required, not 'str'

[yifengji]

when I tryed
with open(pkl_path, 'rb') as f:
dd = pickle.load(f)
# Mean template vertices
self.v_template = tf.Variable(
undo_chumpy(dd['v_template']),
name='v_template',
dtype=dtype,
trainable=False)
I got new issue：