graph is surrounded by b'\n

I'm using Django 2.15 while running this code:

and calling it in template:
by running
` {{ feature_chart|safe}} `

I have this errror: (graph is adding unwanted string b'\n)

Some ideas how to solve this issue? Thank you

Start by reproducing the reported Django template usage with `{{ feature_chart|safe }}` and inspect the generated graph output for the unwanted `b'\n` text. Done means identifying why those bytes appear and confirming that the rendered graph no longer contains them.

Written by the indexing model from the issue text.