In MediaWiki 1.35.1, the little arrow icon next to [[wikipedia:...]] interwiki links does not display because the path /w/skins/Vector/images/external-link-ltr-icon.png does not exist (404 error).
Here is an example page illustrating the problem.
The Vector CSS indicates that the icon is located in /w/skins/Vector/images:
a.extiw { /* ... */ background-image: url(//<site>/w/skins/Vector/images/external-link-ltr-icon.png?325de); }
However, looking in w/skins/Vector, I see there is no images subdirectory. The directory is actually resources/skins.vector.styles/images.
Is the Vector CSS wrong, or my wiki misconfigured somehow?