Script exit with no output

---

Warning : `load_model` does not return WordVectorModel or SupervisedModel any more, but a `FastText` object which is very similar.
Traceback (most recent call last):
  File "./src/tgnews.py", line 111, in <module>
    main()
  File "./src/tgnews.py", line 90, in main
    articles = get_articles(source_dir)
  File "./src/tgnews.py", line 68, in get_articles
    with open(source_dir + '/' + html_doc, encoding='utf-8') as f:
IsADirectoryError: [Errno 21] Is a directory: '../../sampledata_ru//20200525'