Use the Developer Tools built into your browser to check the Console for error messages. As it stands, you're description isn't really specific enough for anyone to help you.
I'd guess you're running into something related to CORS, but it's impossible to say without the errors themselves.
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Thanks for the reply.
I managed to solve the issue.
The error is due to secure connection from the domain where tableau is hosted.
managed to use http instead of https in the URL and closed the issue