New problems detected with a few big TIFF (but not the biggest)
For example here:
https://commons.wikimedia.org/wiki/File:CH-NB_-_1802,_Zweite_Beschiessung_von_Z%C3%BCrich,_12._und_13._September_-_Collection_Gugelmann_-_GS-GUGE-KELLER-H-E-7.tif
But we have ~50 pictures of this category which are not thumbnailed at all:
https://commons.wikimedia.org/wiki/Category:CH-NB-Collection_Gugelmann
TheDJ posted the related log:
Error creating thumbnail: convert: /tmp/localcopy_7570ffa9a5d6-1.tif: wrong data type 7 for "RichTIFFIPTC"; tag ignored. `TIFFReadDirectory' @ warning/tiff.c/TIFFWarnings/706.
convert: /tmp/localcopy_7570ffa9a5d6-1.tif: Bogus "StripByteCounts" field, ignoring and calculating from imagelength. `TIFFReadDirectory' @ warning/tiff.c/TIFFWarnings/706.
convert: /tmp/localcopy_7570ffa9a5d6-1.tif: Read error at scanline 2357; got 11676 bytes, expected 21900. `TIFFFillStrip' @ error/tiff.c/TIFFErrors/496.
Remark: this bug was firstly reported here: https://phabricator.wikimedia.org/T54045#959148