Werkzeug Internal Server Error

traceback.txt

Traceback (most recent call last):
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/flask/app.py", line 1836, in __call__
    return self.wsgi_app(environ, start_response)
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/flask/app.py", line 1820, in wsgi_app
    response = self.make_response(self.handle_exception(e))
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/flask/app.py", line 1403, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/flask/app.py", line 1817, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/flask/app.py", line 1477, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/flask/app.py", line 1381, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/flask/app.py", line 1475, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/flask/app.py", line 1461, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/sqlite_web/sqlite_web.py", line 175, in inner
    return fn(table, *args, **kwargs)
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/sqlite_web/sqlite_web.py", line 207, in table_structure
    triggers=dataset.get_triggers(table))
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/flask/templating.py", line 128, in render_template
    context, ctx.app)
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/flask/templating.py", line 110, in _render
    rv = template.render(context)
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/jinja2/environment.py", line 969, in render
    return self.environment.handle_exception(exc_info, True)
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/jinja2/environment.py", line 742, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/sqlite_web/templates/table_structure.html", line 1, in top-level template code
    {% extends "base_table.html" %}
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/sqlite_web/templates/base_table.html", line 1, in top-level template code
    {% extends "base_tables.html" %}
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/sqlite_web/templates/base_tables.html", line 1, in top-level template code
    {% extends "base.html" %}
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/sqlite_web/templates/base.html", line 58, in top-level template code
    {% block content %}{% endblock %}
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/sqlite_web/templates/base_table.html", line 26, in block "content"
    {% block inner_content %}
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/sqlite_web/templates/table_structure.html", line 122, in block "inner_content"
    <div style="display:none;">{{ index.sql|highlight }}</div>
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/sqlite_web/sqlite_web.py", line 567, in highlight_filter
    return Markup(syntax_highlight(data))
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/sqlite_web/sqlite_web.py", line 40, in syntax_highlight
    return highlight(data, lexer, formatter)
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/pygments/__init__.py", line 87, in highlight
    return format(lex(code, lexer), formatter, outfile)
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/pygments/__init__.py", line 45, in lex
    return lexer.get_tokens(code)
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/pygments/lexer.py", line 151, in get_tokens
    text, _ = guess_decode(text)
  File "/home/jitendran/.virtualenvs/pydroid/lib/python2.7/site-packages/pygments/util.py", line 309, in guess_decode
    text = text.decode('utf-8')
AttributeError: 'NoneType' object has no attribute 'decode'