verification-error and overwrite option disabled error with single-page PDF

[evad37]

From https://commons.wikimedia.org/wiki/Commons_talk:CropTool#Errors

GreenMeansGo, Danmichaelo: ... I did experience "Upload failed! [api] Received error: verification-error : File extension ".pdf" does not match the detected MIME type of the file (image/jpeg)." and untrue "The overwrite option is disabled because this is a multipage file." when trying to crop File:1900 Utah Agricultural College football team.pdf. — Jeff G. ツ please ping or talk to me 14:50, 14 February 2019 (UTC)