Thread:Manuel de la Fuente/@comment-34951744-20180405003534/@comment-5774380-20180405013425

That article is for the version of Eren that appears in the Lost Girls manga, not for the version that appears in the original Attack on Titan manga. This is mentioned in the Manual of Style, and you can also see a set of icons at the top right of the page indicating the continuity that article belongs to.

I can't further reply to this question without a Lost Girls spoiler but... that story takes place in a dream by Mikasa in which Eren dies, so that's why Eren is listed as deceased in that continuity.