"Tag" Shortcode not working

I can’t get the “tag” shortcode to work.

[flickr-gallery mode=”tag” tags=”foo” tag_mode=”all”]

I tried adding my tag, but it simply doesn’t show anything.

If it matters, here the tag I’m linking to:
https://www.flickr.com/photos/75914501@N00/tags/batch062111/

Any help would be appreciated. Many thanks!