https://commons.wikimedia.org/wiki/File:The_Rames%C3%AAum._The_remains_of_the_great_hypostyle_of_the_Temple_of_Rameses_II._The_figures_of_Christian_slaves_have_been_painted_on_some_of_the_columns_(NYPL_b10607452-80839).tiff is the page where this thumbnail is supposed to be displayed:
4,606 × 3,736 pixels, file size: 49.24 MB, MIME type: image/tiff
If I go to https://upload.wikimedia.org/wikipedia/commons/thumb/4/4c/The_Rames%C3%AAum._The_remains_of_the_great_hypostyle_of_the_Temple_of_Rameses_II._The_figures_of_Christian_slaves_have_been_painted_on_some_of_the_columns_%28NYPL_b10607452-80839%29.tiff/lossy-page1-1263px-thumbnail.tiff.jpg I get the following error.
Request from 103.125.234.199 via cp5006 frontend, Varnish XID 1065774462 Upstream caches: cp5006 int Error: 500, Internal Server Error at Thu, 02 Jan 2020 02:47:17 GMT
Note that the same thing is happening if I try to open thumbnails of other sizes. I was able to open the original file in my browser.