fixed errors in script, removed references to recovered fields, and a…

[eborchardt]

Description

I fixed some issues with the COVID-19_scraper.py script and added some missing required modules to requirement.txt

(issue_no)

I didn't create an issue

Type of change

Choosing one or more options from the following as per the nature of your Pull request.

• NOTE: These boxes can be checked using [X]

• [X] Bug fix (non-breaking change which fixes an issue)

• [ ] New feature (non-breaking change which adds functionality)

• [ ] Documentation Update

Checklist:

Please tick all the boxes that are fulfilled by your Pull Request.

• [X] I have named my files and folder, according to this project's guidelines.
• [X] My code follows the style guidelines of this project.
• [X] My Pull Request has a descriptive title. (not a vague title like Update index.md)
• [] I have commented on my code, particularly in hard-to-understand areas.
• [] I have created a helpful and easy to understand README.md, according to the given README_TEMPLATE.
• [X] I have included a requirements.txt file (if external libraries are required.)
• [X] My changes do not produce any warnings.
• [ ] I have added a working sample/screenshot of the script.

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