I am getting following error on browser's console while accessing contracts.

Failed to load http://localhost:22000/: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:8080' is therefore not allowed access.

How can I fix it?

Following is code:

    var output = web3.eth.coinbase;

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