How to automate Google SiteVerification Service using laravel in back-end and angularjs in front-end?

I have created the api for the execution of a process triggered from the front-end performing other functionalities (suppose function site(param1, param2) : param1-> {id} , param2->Request object). Then in that function site() , I have called the function of same controller for the google services (suppose function google(param1): param1->Request object) in that I have called the custom service designed to perform google Site Verification. Given the redirect uri in google client json is of function google().

Problem I am facing from calling function site() from front-end is that it is unable to perform google services.

via Chebli Mohamed