jinja2.exceptions.UndefinedError

[Z0pyrus]

After running the run.sh / the UI and after logging in, this happend:

Traceback (most recent call last):
  File "/home/user/.local/lib/python3.8/site-packages/flask/app.py", line 2464, in __call__
    return self.wsgi_app(environ, start_response)
  File "/home/user/.local/lib/python3.8/site-packages/flask/app.py", line 2450, in wsgi_app
    response = self.handle_exception(e)
  File "/home/user/.local/lib/python3.8/site-packages/flask/app.py", line 1867, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/home/user/.local/lib/python3.8/site-packages/flask/_compat.py", line 39, in reraise
    raise value
  File "/home/user/.local/lib/python3.8/site-packages/flask/app.py", line 2447, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/user/.local/lib/python3.8/site-packages/flask/app.py", line 1952, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/user/.local/lib/python3.8/site-packages/flask/app.py", line 1821, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/home/user/.local/lib/python3.8/site-packages/flask/_compat.py", line 39, in reraise
    raise value
  File "/home/user/.local/lib/python3.8/site-packages/flask/app.py", line 1950, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/user/.local/lib/python3.8/site-packages/flask/app.py", line 1936, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/home/user/Desktop/SMD/smd/GUI/backend.py", line 34, in index
    return render_template(
  File "/home/user/.local/lib/python3.8/site-packages/flask/templating.py", line 137, in render_template
    return _render(
  File "/home/user/.local/lib/python3.8/site-packages/flask/templating.py", line 120, in _render
    rv = template.render(context)
  File "/usr/local/lib/python3.8/dist-packages/jinja2/environment.py", line 1090, in render
    self.environment.handle_exception()
  File "/usr/local/lib/python3.8/dist-packages/jinja2/environment.py", line 832, in handle_exception
    reraise(*rewrite_traceback_stack(source=source))
  File "/usr/local/lib/python3.8/dist-packages/jinja2/_compat.py", line 28, in reraise
    raise value.with_traceback(tb)
  File "/home/user/Desktop/SMD/smd/GUI/templates/home.html", line 1, in top-level template code
    {% extends 'base.html' %}
  File "/home/user/Desktop/SMD/smd/GUI/templates/base.html", line 98, in top-level template code
    {% block body %}
  File "/home/user/Desktop/SMD/smd/GUI/templates/home.html", line 84, in block "body"
    <div class="image-shadow-conc-r" style="background-image:url({{user_top_tracks[0].alb_image}});"></div>
  File "/usr/local/lib/python3.8/dist-packages/jinja2/environment.py", line 471, in getattr
    return getattr(obj, attribute)
jinja2.exceptions.UndefinedError: list object has no element 0

[imedjendoubi]

Same issue here