I have a flask front end app i want to upload data from my front end to fabric. how to do it i have created an app through azure i am able to read the file but not able to upload.

Question

I have created a python flask app which should be able to fetch data from fabric and push data to fabric. i have created Microsoft intra app. and got the necessary parameters to access the token. my app is able to fetch the data but not able to push the data. API azure storage access is also granted by the admin. i have given workspace level access as a contributor to my app to still not able to write the data into fabric. can anyone help?