Page in question https://wikitech.wikimedia.org/wiki/WMDE/Wikidata/Growth#Edit_rate
Edit creating chart: https://wikitech.wikimedia.org/w/index.php?title=WMDE/Wikidata/Growth&diff=1843411&oldid=1843409
Chart request in question: https://wikitech.wikimedia.org/api/rest_v1/page/graph/png/WMDE%2FWikidata%2FGrowth/0/0c21ebed7ef8ca0ae7d2c179366f2a4d2d0ded7d.png
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <html><head> <title>404 Not Found</title> </head><body> <h1>Not Found</h1> <p>The requested URL /api/rest_v1/page/graph/png/WMDE/Wikidata/Growth/0/0c21ebed7ef8ca0ae7d2c179366f2a4d2d0ded7d.png was not found on this server.</p> </body></html>