I wanted to build a start button and after clicking on that I wanted to talk to vapi. I have public, private, assistance, workflow ids. But I am not being able to connect at all. here's the code i used. import React from "react"; import Vapi from "@Vapi-ai/web"; const FRONTEND_KEY = import.meta.env.VITE_VAPI_FRONTEND; const ASSISTANT_ID = import.meta.env.VITE_VAPI_ASSISTANT; export default function App() { let vapi = null; // hold the instance const startCall = async () => { vapi = new Vapi(FRONTEND_KEY); // create instance await vapi.start(ASSISTANT_ID); // start call console.log("Call started"); }; const stopCall = async () => { if (vapi) { await vapi.stop(); // stop call console.log("Call stopped"); } }; return ( <> Vapi 2.x Call Test Start Stop ); } But i keep getting error 'Vapi is not a contructor' https://cdn.discordapp.com/attachments/1444610545738055750/1444610546057084938/Screenshot_2025-11-30_102320.png?ex=694e4b69&is=694cf9e9&hm=200ae46147c1cde53d7b21eddb077aef976c346f34c0e587475624f1d0d46b0b&

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The error is caused by the import statement—make sure you use all lowercase in the package name. Replace your import with:

javascript
import Vapi from "@vapi-ai/web";

This should resolve the "Vapi is not a constructor" error in your React app. For best results, also ensure the package is installed with

npm install @vapi-ai/web

and your environment variables are set. Source: - [Vapi Docs: Example Voice Widget](https://docs.vapi.ai/assistants/examples/docs-agent)

i downloaded correct package. Still not working

Still seems to be an issue. Opened an issue here https://github.com/VapiAI/client-sdk-react/issues/35