It looks like an old edit of yours was wrong: https://www.wikidata.org/w/index.php?title=Q1230968&diff=304921048&oldid=288021807. See commons:Category talk:Evangelical Congregation Am Fennpfuhl. In case you don't read German, the user is basically saying that this is not a picture of the church in question, and it sure looks to me like that is the case.
I'd appreciate it if you fix this yourself -- presumably, according to the rules here, you can delete your erroneous image, whereas I could only deprecate it -- but if you do not want to handle this, let me know (ping me here, or respond on my user talk page) and I will follow up. - Jmabel (talk) 16:52, 4 December 2018 (UTC)