Scraping tv shows can produce thumb tags with incorrect url when no images can be found

[nathanpw]

Thanks for the great software!

Describe the bug When I scrape a tv show that doesn't have thumbnails, using the tvdb scrapper. The episode .nfo contains a thumb tag with a "bad" url. i.e.: <thumb>https://www.thetvdb.com/banners/</thumb>

To Reproduce Steps to reproduce the behaviour:

1. Open MediaElch
2. Go to a tv episode that doesn't have a thumbnail image on the tvdb
3. Click on the episode and scrape
4. Use the tvdb scraper
5. Check the info xml for a thumb tag

I was scrapping early Nova episodes (s05E04) from.: https://www.thetvdb.com/series/nova/seasons/official/2

One of the symptoms of this is when these episodes are added to Kodi it doesn't show a thumbnail, and it doesn't appear to be "immediately" added (if at all). If I re-scrap in Kodi it will get an image from the media.

I also noticed it appears the same behavior for tags for actors. But I am not sure if this actually causes any issues and I wasn't able to fully reproduce the problem with actors. I am not sure where the episode actor tags are coming from (kodi media export maybe). As I couldn't get the actors added to the nfo from mediaelch on a few episodes I tried.

Expected behavior I would think there should be no tag or empty thumb tags if no image can be found.

Screenshots n/a

MediaElch Version:

• [ ] 2.8.13-dev (nightly)
• [X] 2.8.12 stable

Operating System:

• [ ] Windows
• [ ] macOS
• [X] Linux (distribution: Ubuntu 20.04)

Additional context Add any other context about the problem here.