Im getting a UI Error when i open the character sheet

I have been working on some mods so I’m not sure if this is being caused by one of my mods
release-821 (x64)[M]

Uncaught TypeError: Cannot read property ‘health’ of undefined
TypeError: Cannot read property ‘health’ of undefined
at n._updateExpendableResource (http://radiant/stonehearth/ui/game/character_sheets/citizen_character_sheet/citizen_character_sheet.js:679:46)
at w (http://radiant/stonehearth/ui/root/js/libs/ember-1.8.1.min.js:5:23160)
at m (http://radiant/stonehearth/ui/root/js/libs/ember-1.8.1.min.js:4:21008)
at b (http://radiant/stonehearth/ui/root/js/libs/ember-1.8.1.min.js:5:13753)
at a (http://radiant/stonehearth/ui/root/js/libs/ember-1.8.1.min.js:5:12519)
at h (http://radiant/stonehearth/ui/root/js/libs/ember-1.8.1.min.js:5:13415)
at a (http://radiant/stonehearth/ui/root/js/libs/ember-1.8.1.min.js:5:12507)
at y (http://radiant/stonehearth/ui/root/js/libs/ember-1.8.1.min.js:5:17298)
at n.set (http://radiant/stonehearth/ui/root/js/libs/ember-1.8.1.min.js:8:25617)
at Object. (http://radiant/stonehearth/ui/root/js/stonehearth/view.js:128:21)

it only happens sometimes. I’m not seeing a pattern.