Custom Visual Issue

Dear All,

I want to make a circular gauge ,I used following published code to make it

https://github.com/maqsoftware/PowerBI-visuals/tree/master/src/CustomVisuals/Published/CircularGauge

But I get following error" Cannot find name '_'."as in image .

I add the following 

npm install lodash --save

typings install dt~lodash --save

but still not working.

Please help since I am new to coding world.

Thank You In Advance,

Best Reagrds,

Dora