Web Socket error when using react/ASP.NET/SQL - reactjs

I have my application set up with ASP.Net/ React.js/ SQL. I believe everything is up to date.
I can not figure out where this error is coming from. When I start the page, everything looks good at first. But, when I open up the terminal, it gives me this error.
"bundle.js:51628
WebSocket connection to 'wss://localhost:44473/ws' failed: Error in connection establishment: net::ERR_CONNECTION_REFUSED"
Please help.
I tried commentingout all of my SQL files to see if the SQL connection had messed up something but it did not help.

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likes
I'm using "EnergyRetailSystemConnectionString" or you can search by your database name

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