@Addshore Hi Adam, thank you for bringing this to our attention. I checked the links in challenge 10 and for me they all work. If I replace the ? with a & I am directed to a non existing page in Wikidata. Could you specify which links you are referring to?

In T255432#6234153, @Christine_Domgoergen_WMDE wrote:

@Addshore Hi Adam, thank you for bringing this to our attention. I checked the links in challenge 10 and for me they all work. If I replace the ? with a & I am directed to a non existing page in Wikidata. Could you specify which links you are referring to?

Only the first ? should stay. The second ? needs to be replaced with a &.

So,

/wiki/Q2?uselang=de?campaign=WMDE_2020_challenge_10

needs to be replaced with

/wiki/Q2?uselang=de&campaign=WMDE_2020_challenge_10

Otherwise, I guess, the campaign tag will not be recognized and nothing will be tracked for the campaign.

Yes sorry, the second ? should be a &!

Otherwise MediaWiki tries to use de?campaign=WMDE_2020_challenge_10 as the language code, which breaks.

@Tobi_WMDE_SW @Addshore Okay, thank you! I changed the link.