ERROR TypeError: Cannot read property 'getInstance' of undefined, js engine: hermes

i was referring the pusher official doc and implemented as it was given. I wanted to implement the chat feature for the react native expo app.When i used this code I got the error.

const pusher = Pusher.getInstance();

await pusher.init({
apiKey: API_KEY,
cluster: API_CLUSTER
});

await pusher.connect();

ERROR TypeError: Cannot read property 'getInstance' of undefined, js engine: hermes
ERROR Invariant Violation: "main" has not been registered. This can happen if:

• Metro (the local dev server) is run from the wrong folder. Check if Metro is running, stop it and restart it in the current project.
• A module failed to load due to an error and AppRegistry.registerComponent wasn't called., js engine: hermes

if i remove that code everything works fine

Start by checking how Pusher is imported in the React Native Expo app and whether the imported value exposes getInstance(). Reproduce the Hermes error with the shown initialization code, then confirm the app can register its main component when that code is present.