Could Inspirations be doing anything to the Villager trade GUI? I have Improved Villagers, and when I have both Inspirations and BWM loaded the Villager trade GUI doesn't show any items, a blank template.
https://imgur.com/a/0tMHY
When I have either BWM or Inspirations loaded with any other mods the problem doesn't occur.
BWM does a few things with Villages, but I don't see anything in the Inspirations config or github that mention 'village' so I'm confused.

MC 1.12.2
1.12.2-forge1.12.2-14.23.2.2611
Inspirations-1.12.2-0.1.2.jar
Mantle-1.12-1.3.1.21.jar
BetterWithMods-1.12-2.0.25.jar
Improved Villagers-3.0.2.jar

Actually this seems to be between Mantle, BWM and IV.