Werkzeug Internal Server Error

traceback.txt

Traceback (most recent call last):
  File "/home/nhrjr/dev/premiumizer/virtualenv/lib/python2.7/site-packages/flask_reverse_proxy/__init__.py", line 58, in __call__
    return self.app(environ, start_response)
  File "/home/nhrjr/dev/premiumizer/virtualenv/lib/python2.7/site-packages/flask/app.py", line 1991, in wsgi_app
    response = self.make_response(self.handle_exception(e))
  File "/home/nhrjr/dev/premiumizer/virtualenv/lib/python2.7/site-packages/flask/app.py", line 1567, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/home/nhrjr/dev/premiumizer/virtualenv/lib/python2.7/site-packages/flask/app.py", line 1988, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/nhrjr/dev/premiumizer/virtualenv/lib/python2.7/site-packages/flask/app.py", line 1641, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/nhrjr/dev/premiumizer/virtualenv/lib/python2.7/site-packages/flask/app.py", line 1544, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/home/nhrjr/dev/premiumizer/virtualenv/lib/python2.7/site-packages/flask/app.py", line 1639, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/nhrjr/dev/premiumizer/virtualenv/lib/python2.7/site-packages/flask/app.py", line 1625, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/home/nhrjr/dev/premiumizer/virtualenv/lib/python2.7/site-packages/flask_login.py", line 789, in decorated_view
    return func(*args, **kwargs)
  File "/home/nhrjr/dev/premiumizer/premiumizer.py", line 1228, in history
    return render_template("history.html", taskad=taskad, taskdel=taskdel, taskdl=taskdl)
  File "/home/nhrjr/dev/premiumizer/virtualenv/lib/python2.7/site-packages/flask/templating.py", line 134, in render_template
    context, ctx.app)
  File "/home/nhrjr/dev/premiumizer/virtualenv/lib/python2.7/site-packages/flask/templating.py", line 116, in _render
    rv = template.render(context)
  File "/home/nhrjr/dev/premiumizer/virtualenv/lib/python2.7/site-packages/jinja2/environment.py", line 989, in render
    return self.environment.handle_exception(exc_info, True)
  File "/home/nhrjr/dev/premiumizer/virtualenv/lib/python2.7/site-packages/jinja2/environment.py", line 754, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/home/nhrjr/dev/premiumizer/templates/history.html", line 2, in top-level template code
    {% set active_page = "history" %}
  File "/home/nhrjr/dev/premiumizer/templates/base.html", line 60, in top-level template code
    {% block content %}
  File "/home/nhrjr/dev/premiumizer/templates/history.html", line 7, in block "content"
    <pre>{{ taskad }}</pre>
UnicodeDecodeError: 'ascii' codec can't decode byte 0xd0 in position 2193: ordinal not in range(128)