Facing this error when connecting to an api's int endpoint using Power Query

Hi jatin27chopra ,

Please have a reference of the two similar threads firstly to check if you have the same scenario.

https://community.powerbi.com/t5/Desktop/DataSource-Error-Web-Contents-failed-to-get-data-from-500/td-p/392703

https://social.technet.microsoft.com/Forums/lync/en-US/df940ff3-46da-4340-9211-bf7593081d9f/webcontents-post-query-in-powerbi-desktop?forum=powerquery

In addition, please share your M query which you connected the data source so that we could give further advice. Please note do mask your sensitive data before sharing.

Best Regards,

Cherry