Simulring Error Line 146

[andrewlearned]

I'm trying to get the Funlet Simulring working. I'm getting an error at the "split" function (full error copied below).

I've copied in the code, added two numbers to line 37:
phoneNumbers: [+1xxx,+1xxx],

I also have to environmental variables set:
TWILIO_VOICE_WEBHOOK_URL=/funlet-simulring and:
FUNLET_SIMULRING_PHONE_NUMBERS=+1xxx,+1xxx

I've tried editing line 145 since "FUNLET_FINDME_PHONE_NUMBERS" seems to me to not be defined anywhere. But if I define it my just hard coding in my forwarding numbers, I can get the function to play, but it doesn't forward anywhere.

Any help y'all can offer is appreciated! I'm at a total loss.

Error: {"message":"Cannot read property 'split' of undefined","name":"TypeError","stack":"TypeError: Cannot read property 'split' of undefined\n at getPhoneNumbers (/var/task/handlers/ZNxxx.js:145:37)\n at Object.exports.handler (/var/task/handlers/ZNxxx.js:387:29)\n at Object.exports.handler (/var/task/node_modules/runtime-handler/index.js:339:10)\n at Runtime.exports.handler (/var/task/runtime-handler.js:17:17)\n at Runtime.handleOnceNonStreaming (/var/runtime/Runtime.js:74:25)"}