Socket error: Error: unexpected server response (403)

[sorokinvld]

Hi.

After installation on an Ubuntu (16 lts) EC2 Instance I get error:

[wsc] =✘= Socket error: { Error: unexpected server response (403)
    at ClientRequest.response (/home/ubuntu/web/node_modules/ws/lib/WebSocket.js:719:15)
    at ClientRequest.g (events.js:291:16)
    at emitOne (events.js:96:13)
    at ClientRequest.emit (events.js:188:7)
    at HTTPParser.parserOnIncomingClient (_http_client.js:474:21)
    at HTTPParser.parserOnHeadersComplete (_http_common.js:99:23)
    at Socket.socketOnData (_http_client.js:363:20)
    at emitOne (events.js:96:13)
    at Socket.emit (events.js:188:7)
    at readableAddChunk (_stream_readable.js:176:18)
  type: 'error',
  target: 
   WebSocket {
     domain: null,
     _events: { error: [Function: onerror] },
     _eventsCount: 1,
     _maxListeners: undefined,
     _socket: null,
     _ultron: null,
     _closeReceived: false,
     bytesReceived: 0,
     readyState: 3,
     supports: { binary: true },
     extensions: null,
     _binaryType: 'arraybuffer',
     _isServer: false,
     url: 'ws://localhost:8546/api/?_primuscb=LUzwiR9',
     protocolVersion: 13,
     _closeTimer: null,
     _closeCode: 1006 } }

nodejs-legacy installed.

geth with parameter "--ws" says:
$admin.startWS()
WebSocket RPC already running on localhost:8546