Cannot read property 'extend' of undefined

[adithyasai]

I am getting this error when i tried to clone the project and run the index file in browser

TypeError: Cannot read property 'extend' of undefined
at p (toastr.min.js:1)
at Object.b [as error] (toastr.min.js:1)
at s. (controllers.js:29)
at u. (aws-sdk.min.js:6)
at u.h [as callListeners] (aws-sdk.min.js:7)
at u.l [as emit] (aws-sdk.min.js:7)
at u.g (aws-sdk.min.js:6)
at u.e (aws-sdk.min.js:6)
at n.i [as runTo] (aws-sdk.min.js:7)
at aws-sdk.min.js:7