To reproduce

Setup

1. Set up outgoing email for testing (e.g. mailcatcher)
2. Enable the following Privacy admin settings
   • Contact the privacy officer
   • Automatic data export request approval
3. Create a course with special characters in the course name (e.g. "# / \ > " < &")

Replication steps

1. Log in as a student enrolled in a course.
2. Post to a forum. Make sure to add files/images and attachments in the forum post.
3. Create a data export request.
4. Run cron
5. Download the data export archive.
6. Extract the archive.
7. Open index.html
8. Navigate the tree to your data for your forum post.
9. Click on the links to the files
10. Expected: The selected file should be downloaded or rendered by the browser.
11. Actual: You get a file not found error.