Power BI Embedded - Not able to upload PBIX using Import API endpoint

Hello Folks,

Need help on Power BI REST API Development - Import PBIX to workspace.

Problem Statement -
Working on PBI Admin REST API's with Node.js where trying to upload the power bi report from local folder to perticular workspace. But, while uploading the file getting Bad Request Error 400

Error Message - Bad Request 400

API used for Import PBIX - Imports - Post Import - REST API (Power BI Power BI REST APIs) | Microsoft Docs 

Attached Code snapshot for reference.

Thanks in advance.