Sheet Worker Scripts- Unexpected console errors

I have been making some new additions to my sheet worker scripts, but when I run it, I get errors such as Error: Firebase.update failed: First argument contains NaN in property 'campaign-2299483-mMrc3Gc6R4HfabYCO7kZZA.char-attribs.char.-KzGIrdJCmoszxzp9R-J.-KzGIt-oKrnQDQbCqMdD.current' and FIREBASE WARNING: Exception was thrown by user callback. hg@<a href="https://app.roll20.net/assets/firebase.2.4.0.js:123:203" rel="nofollow">https://app.roll20.net/assets/firebase.2.4.0.js:123:203</a> jg/&lt;@<a href="https://app.roll20.net/assets/firebase.2.4.0.js:126:168" rel="nofollow">https://app.roll20.net/assets/firebase.2.4.0.js:126:168</a> Fb@<a href="https://app.roll20.net/assets/firebase.2.4.0.js:28:656" rel="nofollow">https://app.roll20.net/assets/firebase.2.4.0.js:28:656</a> jg@<a href="https://app.roll20.net/assets/firebase.2.4.0.js:126:134" rel="nofollow">https://app.roll20.net/assets/firebase.2.4.0.js:126:134</a> X.prototype.update@<a href="https://app.roll20.net/assets/firebase.2.4.0.js:258:369" rel="nofollow">https://app.roll20.net/assets/firebase.2.4.0.js:258:369</a> Backbone.sync/&lt;@<a href="https://app.roll20.net/assets/app.js?1510075463:3:1582" rel="nofollow">https://app.roll20.net/assets/app.js?1510075463:3:1582</a> c@<a href="https://app.roll20.net/assets/firebase.2.4.0.js:240:56" rel="nofollow">https://app.roll20.net/assets/firebase.2.4.0.js:240:56</a> h.Zb/&lt;@<a href="https://app.roll20.net/assets/firebase.2.4.0.js:201:708" rel="nofollow">https://app.roll20.net/assets/firebase.2.4.0.js:201:708</a> gc@<a href="https://app.roll20.net/assets/firebase.2.4.0.js:52:165" rel="nofollow">https://app.roll20.net/assets/firebase.2.4.0.js:52:165</a> cc@<a href="https://app.roll20.net/assets/firebase.2.4.0.js:30:216" rel="nofollow">https://app.roll20.net/assets/firebase.2.4.0.js:30:216</a> bc@<a href="https://app.roll20.net/assets/firebase.2.4.0.js:29:1198" rel="nofollow">https://app.roll20.net/assets/firebase.2.4.0.js:29:1198</a> Qi@<a href="https://app.roll20.net/assets/firebase.2.4.0.js:224:313" rel="nofollow">https://app.roll20.net/assets/firebase.2.4.0.js:224:313</a> h.Ib@<a href="https://app.roll20.net/assets/firebase.2.4.0.js:238:140" rel="nofollow">https://app.roll20.net/assets/firebase.2.4.0.js:238:140</a> h.Og@<a href="https://app.roll20.net/assets/firebase.2.4.0.js:240:244" rel="nofollow">https://app.roll20.net/assets/firebase.2.4.0.js:240:244</a> Backbone.sync@<a href="https://app.roll20.net/assets/app.js?1510075463:3:1243" rel="nofollow">https://app.roll20.net/assets/app.js?1510075463:3:1243</a> save@<a href="https://app.roll20.net/assets/base.js?1506440804:1:18264" rel="nofollow">https://app.roll20.net/assets/base.js?1506440804:1:18264</a> syncedSave@<a href="https://app.roll20.net/assets/app.js?1510075463:40:2273" rel="nofollow">https://app.roll20.net/assets/app.js?1510075463:40:2273</a> @<a href="https://app.roll20.net/assets/app.js?1510075463:47:6036" rel="nofollow">https://app.roll20.net/assets/app.js?1510075463:47:6036</a> in the console. Additionally, none of the expected attributes are created when their values are set, but the values are changed on the character sheet accordingly, and the stat total script I have running works perfectly fine regardless of the NaN errors. Here is the relevant code. Help? Note: the classlist variable does actually have content inside it, I just omitted it because I don't think it's relevant.

Please help, I really have no idea what's causing this. :(

When this happens to me, it means I tried setting NaN for a value instead of a number. This can happen when trying to convert an invalid string to a number, like "a", or if I just forgot to set that value. To track it down, i replaced getAttrs with a call to setWrapper, which looks at the values before passing them to setAttrs, so that it will print out the offending entry: note if you uncomment the a[k]="" line it will resets it from NaN to "" , which should cause roll20 to set it to the default value for that field. export function setWrapper(a,b,c){ _.each(a,function(v,k){ if (v!=='' && !v && (isNaN(v) || v === undefined)){ //a[k]=""; console.log("Setting NaN or undefined for attribute: "+k); } }); setAttrs(a,b,c); }