graphrag giving 404 resource not found error when uploading documents

[manuchadha1979]

In /graphrag-accelerator/notebooks/1-Quickstart.ipynb, when I run the upload_files cell - which uploads text files into blob container - I get { "statusCode": 404, "message": "Resource not found" } error. What I might be doing wrong. The variable values are

file_directory = "testdata" - this got created when I executed the get-wiki-articles.py
storage_name = "filesforgraphrag" - this is a name I have given. It doesn't exist in storage account. I assume this would be somehow created
index_name = "graphrag-index" - name I gave. Index doesn't pre-exist
endpoint = "https://apim-something.azure-api.net" - from gateway url of apim resource. When I access it directly or after appending /data (as in the code), I get 404

I am assuming that any routing configuration has already been done by the accelerator. I just ran the deploy.sh file and then started executing the the notebook.