Difficulty Rating API Broken

As of last night the Difficulty Rating API is crashing when I select an NPC check for difficulty.   For reference, the error message generated was:  TypeError: Cannot read property '0' of undefined TypeError: Cannot read property '0' of undefined at apiscript.js:9241:28 at Array.forEach (<anonymous>) at GetPartyThresholds (apiscript.js:9238:38) at apiscript.js:9416:32 at eval (eval at <anonymous> (/home/node/d20-api-server/api.js:161:1), <anonymous>:65:16) at Object.publish (eval at <anonymous> (/home/node/d20-api-server/api.js:161:1), <anonymous>:70:8) at /home/node/d20-api-server/api.js:1721:12 at /home/node/d20-api-server/node_modules/firebase/lib/firebase-node.js:93:560 at hc (/home/node/d20-api-server/node_modules/firebase/lib/firebase-node.js:39:147) at Kd (/home/node/d20-api-server/node_modules/firebase/lib/firebase-node.js:93:546)

Probably this function is where the problem is: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 const GetPartyThresholds = () =&gt; { let easy = 0 ; let medium = 0 ; let hard = 0 ; let deadly = 0 ; state . DifficultyRating . Party . forEach (( player ) =&gt; { const level = player . Level ; const expTier = XPThresholds [ level - 1 ]; easy += expTier [ 0 ]; medium += expTier [ 1 ]; hard += expTier [ 2 ]; deadly += expTier [ 3 ]; }); return [ easy , medium , hard , deadly ]; } Someone in your party probably has a level that is either not set (undefined), or above 20, or below 1.&nbsp; That would cause the XPThresholds lookup to return undefined, and then would cause the expTier (undefined) to be dereference don a 0, causing the " TypeError: Cannot read property '0' of undefined " error. I patched the script and created a pull request to put the fix in the 1-click:&nbsp; <a href="https://github.com/Roll20/roll20-api-scripts/pull/1313" rel="nofollow">https://github.com/Roll20/roll20-api-scripts/pull/1313</a> In the interim, you should re-set the levels on each of your players to make sure they are numbers between 1 and 20.

That totally worked.&nbsp; Thanks Aaron!