Hey @pallavisharma1,
This issue usually occurs when you try sending a request to your localhost from the postman’s website and the Website cannot send a request to your computer’s localhost. It first needs to connect to your PC with the Postman desktop client.
But in your case, it looks a bit tricky because you are trying to connect Alation which should ideally work out.
you can refer few links which might help you understand or fix the issue
- Unable to use Postman on Web – Postman
- POST request only works with the desktop agent, on cloud agent I get error 400 - #4 by security-cosmologist
- video : Now send requests with Postman On Web - YouTube
- Cloud Agent Error: Can not send requests
Also, it will a quick help if you can post your error or screenshot with respect to the issue.
Best,
Vikram