WebsocketApi Lambda and connect ECONNREFUSED

Hello, I've been setting up Websocket API with Lambda and I received following error:

<message-id>	INFO	Error: connect ECONNREFUSED <ip>
    at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1300:16) {
  errno: -111,
  code: 'ECONNREFUSED',
  syscall: 'connect',
  address: <ip>,
  port: 80,
  '$metadata': { attempts: 1, totalRetryDelay: 0 }

Env is a Node18 and Postman (ws) as a client.

Lambda's code:

import { ApiGatewayManagementApiClient, DeleteConnectionCommand,PostToConnectionCommand } from "@aws-sdk/client-apigatewaymanagementapi";

const api = new ApiGatewayManagementApiClient({endpoint: 'wss://<id>.execute-api.<region>.amazonaws.com/production',
    region: 'eu-central-1'
})


export const handler = async (event) => {
    
    
    console.log(event);
    
    const {routeKey, connectionId} = event?.requestContext
    let msg;
    
    console.log(`Request key is ${routeKey} and connectionID is ${connectionId}`)
    
    switch(routeKey){
        case '$connect':
            msg = 'connected My friend';
            break;
            
        case '$disconnect':
            msg = 'disconnected my friend';
            break;
            
        case 'message':
            try{
                await replyToMessage(connectionId, 'RAMP PAM PAM')
            }catch(e){
                console.log('EXEPTION ALARM')
                console.log(e)
            }
            break;
            
        default:
            console.log('something bad happened', routeKey);
            break;
    }
    
    // TODO implement
    const response = {
        statusCode: 200
    };
    
    
    return response;
};

const replyToMessage = (ConnectionId, message) =>{
        const data = {message};
        const cmd = new PostToConnectionCommand({
            ConnectionId,
            Data: Buffer.from(JSON.stringify(data))
        })
        
        const result =  api.send(cmd);
        console.log(result)
        return result;
    }

Lambda's policy

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "VisualEditor0",
            "Effect": "Allow",
            "Action": "execute-api:*",
            "Resource": "arn:aws:execute-api:<region><id>:<api-id>/production/*"
        }
    ]
}

Thank you in advance, Arczik!