ModuleNotFoundError: No module named 'tflite_support.metadata_writers'

from tflite_support.metadata_writers import object_detector
from tflite_support.metadata_writers import writer_utils
from tflite_support import metadata

ObjectDetectorWriter = object_detector.MetadataWriter
_MODEL_PATH = "mobile.tflite"
_LABEL_FILE = "labelmap.txt"
_SAVE_TO_PATH = "detect_metadata.tflite"

writer = ObjectDetectorWriter.create_for_inference(
    writer_utils.load_file(_MODEL_PATH), [127.5], [127.5], [_LABEL_FILE])
writer_utils.save_file(writer.populate(), _SAVE_TO_PATH)

# Verify the populated metadata and associated files.
displayer = metadata.MetadataDisplayer.with_model_file(_SAVE_TO_PATH)
print("Metadata populated:")
print(displayer.get_metadata_json())
print("Associated file(s) populated:")
print(displayer.get_packed_associated_file_list())

I use this code from link Github: https://github.com/tensorflow/tensorflow/issues/43775

But this code was a bug. Below that is an error after running the above code.

ModuleNotFoundError                       Traceback (most recent call last)
<ipython-input-87-39fd915e7a2a> in <module>()

---->     1 from tflite_support.metadata_writers import object_detector
          2 from tflite_support.metadata_writers import writer_utils
          3 from tflite_support import metadata
          4 
          5 ObjectDetectorWriter = object_detector.MetadataWriter

ModuleNotFoundError: No module named 'tflite_support.metadata_writers'

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How to fix this bug?