This also happened to me when I looked at the live sheet on Roll20.
When I looked at the sheet code("Delta Green 2"-folder), I noticed that:
the translation file was named "translation s .json", not "translation.json" as normal the exists not folder containing the actual translations for the sheet I pinged the relevant party in the github issue , where I gave this same comment. For Pro users, the likely short-time fix for this issue until Tuesday's weekly sheet update, is to switch to use "custom sheet", and use the html, css & translation file for the sheet.