UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa0 in position 576: invalid start byte

[sentry-io]

Sentry Issue: RASA-OPEN-SOURCE-T7

UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa0 in position 576: invalid start byte
  File "rasa/shared/nlu/training_data/loading.py", line 134, in guess_format
    content = rasa.shared.utils.io.read_file(filename)
  File "rasa/shared/utils/io.py", line 118, in read_file
    return f.read()

UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa0 in position 576: invalid start byte
(15 additional frame(s) were not displayed)
...
  File "rasa/shared/importers/multi_project.py", line 106, in _init_from_directory
    elif rasa.shared.data.is_nlu_file(full_path):
  File "rasa/shared/data.py", line 201, in is_nlu_file
    return nlu_loading.guess_format(file_path) != nlu_loading.UNK
  File "rasa/shared/nlu/training_data/loading.py", line 137, in guess_format
    if MarkdownReader.is_markdown_nlu_file(filename):
  File "rasa/shared/nlu/training_data/formats/markdown.py", line 177, in is_markdown_nlu_file
    content = rasa.shared.utils.io.read_file(filename)
  File "rasa/shared/utils/io.py", line 118, in read_file
    return f.read()