Suggested fix: mod interface needs a big helping of robustness. In Python, I'd "just" put a big try:except: around it
![Wink ;-)](./images/smilies/icon_e_wink.gif)
The error in the mod is that it uses literal line breaks in a string, which is invalid JSON. But it worked in 0.13.8. Not mentioned an update to the JSON library, I guess. Which seems reasonable, sort-of. Changelogging is hard, let's play Factorio.
![Wink ;-)](./images/smilies/icon_e_wink.gif)