PHP Thruway ワーカーを備えた Crossbar.io サーバーがあります。最近、次のエラーが発生し始めました。現在、1日1回程度発生しています。
2016-04-17T21:08:12+0000 [Router 9572] Unable to format event {'log_logger': <Logger 'crossbar.router.protocol.WampWebSocketServerProtocol'>, 'log_time': 1460927292.17918, 'log_source': None, 'log_format': 'Traceback (most recent call last):\n File "/usr/local/lib/python2.7/site-packages/autobahn/wamp/websocket.py", line 88, in onMessage\n for msg in self._serializer.unserialize(payload, isBinary):\n File "/usr/local/lib/python2.7/site-packages/autobahn/wamp/serializer.py", line 106, in unserialize\n raise ProtocolError("invalid serialization of WAMP message ({0})".format(e))\nProtocolError: invalid serialization of WAMP message (Expected object or value)\n'}: tuple index out of range
2016-04-17T21:08:15+0000 [Guest 9583] The connected has closed with reason: close
2016-04-17T21:08:19+0000 [Guest 9583] PHP Fatal error: Call to a member function call() on null in /var/www/html/pickupServer/vendor/voryx/thruway/src/Thruway/ClientSession.php on line 106
2016-04-17T21:08:19+0000 [Guest 9583] Fatal error: Call to a member function call() on null in /var/www/html/pickupServer/vendor/voryx/thruway/src/Thruway/ClientSession.php on line 106
2016-04-17T21:08:19+0000 [Controller 9565] Guest worker2 exited with error A process has ended with a probable error condition: process ended with exit code 255.
これを防ぐために暑いことを知っている人はいますか?
この場合のようにワーカーが失敗した場合、ワーカーを自動的に再起動するにはどうすればよいですか?