has type str, but expected one of: bytes (tf.train.Example)

make str to bytes

for example

#String to bytes

my_str = "file name"

my_str_as_bytes = str.encode(my_str)

type(my_str_as_bytes) # ensure it is byte representation

#byte to string

my_decoded_str = my_str_as_bytes.decode()

type(my_decoded_str) # ensure it is string representation