how to send the exception/error for nestjs websocket of adapter @nestjs/platform-ws

I am trying to send the exception using nestjs websocket based on conditions, tried using

throw new WsException('Invalid data');

but not sending any exception

Here is the sample code

import WebSocket from 'ws';
import {
SubscribeMessage,
WebSocketGateway,
WsException,
} from '@nestjs/websockets';

@WebSocketGateway({ path: '/api' })
export class MainGateway {
@SubscribeMessage('message')
handleMessage(client: WebSocket, payload: any) {
if (payload.id === 4) {
throw new WsException('Invalid Data');
}
client.send(JSON.stringify({ id: payload.id }));
}
}


and I'm creating the connection using angular here is the code snippet

export class WsComponent implements OnInit {
public value!: number;
public subject$ = webSocket('ws://localhost:3000/api');

ngOnInit(): void {
const event = { event: 'message', data: { id: 4 } };

this.subject$.subscribe({
next: (v: any) => (this.value = v.id),
error: (e) => console.error(e),
complete: () => console.info('complete'),
});

this.subject$.next(event);
}
}



Please help me to solve the issue

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