Jupyter files are not rendered on Bitbucket 8+ versions

Issue Summary

This is reproducible on Data Center: yes

Steps to Reproduce

1. commit a file (<<filename.ipynb>>) with jupyter content in local repository
2. push to remote
3. navigate to the repository and open the recent file committed.

Expected Results

• the file with jupyter content is shown/rendered on the screen

Actual Results

• When clicking on the file, Bitbucket cannot open it and shows a loading icon.

The logs don't throw any error or exception when opening the file.

Workaround

Currently, there is no known workaround for this behavior. A workaround will be added here when available