In my (non-TeXlive) ConTeXt installation, I've found the file: $HOME/context/tex/texmf-context/tex/context/base/mkiv/util-jsn.lua
and added the changes you mentioned (so the end of the file now is): package.loaded["util-jsn"] = json package.loaded.json = json return json (around the line 460) and I ran context --make But I am still getting the same error. Are these steps correct, or did I miss anything? I am not familiar with ConTeXt codebase (or not well enough) ... Thank you for guiding me through this! ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror) archive : https://github.com/contextgarden/context wiki : https://wiki.contextgarden.net ___________________________________________________________________________________