socket.io error on client side

[devang-gaur]

I am getting this error while loading index.html. Need help.

The connection to ws://localhost:3000/socket.io/?EIO=3&transport=websocket&sid=zDCPxairx0Xm_Jk2AAAB was interrupted while the page was loading.

[reyfdev]

First: is't neccesary put /socket.io/?.
Second: make sure you have this script:

<script type="text/javascript" src="/socket.io/socket.io.js"></script> <script src="https://cdn.socket.io/socket.io-1.3.7.js"></script>