Sample project that calls my vb.net Web API using ajax/jquery/javascript

I want a simple page that has two buttons. One button call a get API and the other calls a post api. I will give you the api url and my code. I've attached my code and I get an error of Exception: TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them at [login to view URL] (<anonymous>:2:14) at [login to view URL] (file:///K:/projects/Material/material-dashboard-pro-html-v2.1.0/material-dashboard-pro-html-v2.1.0/examples/tables/[login to view URL]:11) at u ([login to view URL]:2:27457) at [login to view URL] [as rejectWith] ([login to view URL]:2:28202) at k ([login to view URL]:2:77676) at XMLHttpRequest.<anonymous> ([login to view URL]:2:79882)] caller: (...) length: 2 name: "setRequestHeader" prototype: {constructor: ƒ} __proto__: ƒ () [[FunctionLocation]]: [login to view URL] [[Scopes]]: Scopes[4] state: ƒ () status: 0 statusCode: ƒ (e) statusText: "error" then: ƒ (t,r,i) __proto__: Object