After adding url_for in index.html, web page is not launching.

Python version: 3.4.1 OS Version: Windows 7 Enterprise

After adding url_for in index.html, webpage is not getting launched and received below error after launching: [2016-09-22 13:26:14,007] ERROR in app: Exception on / [GET] Traceback (most recent call last): File "C:\Python34\lib\site-packages\flask-0.11.1-py3.4.egg\flask\app.py", line 1988, in wsgi_app response = self.full_dispatch_request() File "C:\Python34\lib\site-packages\flask-0.11.1-py3.4.egg\flask\app.py", line 1641, in full_dispatch_request rv = self.handle_user_exception(e) File "C:\Python34\lib\site-packages\flask-0.11.1-py3.4.egg\flask\app.py", line 1544, in handle_user_exception reraise(exc_type, exc_value, tb) File "C:\Python34\lib\site-packages\flask-0.11.1-py3.4.egg\flask_compat.py", line 33, in reraise raise value File "C:\Python34\lib\site-packages\flask-0.11.1-py3.4.egg\flask\app.py", line 1639, in full_dispatch_request rv = self.dispatch_request() File "C:\Python34\lib\site-packages\flask-0.11.1-py3.4.egg\flask\app.py", line 1625, in dispatch_request return self.view_functions[rule.endpoint](**req.view_args) File "D:\Ajay\Documents\TreeHouse\Flask\FlaskBasics\Flask-Basics\Flask Basics\Stage 3 Start\app.py", line 9, in index return render_template('index.html') File "C:\Python34\lib\site-packages\flask-0.11.1-py3.4.egg\flask\templating.py", line 133, in render_template return _render(ctx.app.jinja_env.get_or_select_template(template_name_or_list), File "C:\Python34\lib\site-packages\jinja2-2.8-py3.4.egg\jinja2\environment.py", line 851, in get_or_select_template return self.get_template(template_name_or_list, parent, globals) File "C:\Python34\lib\site-packages\jinja2-2.8-py3.4.egg\jinja2\environment.py", line 812, in get_template return self._load_template(name, self.make_globals(globals)) File "C:\Python34\lib\site-packages\jinja2-2.8-py3.4.egg\jinja2\environment.py", line 774, in _load_template cache_key = self.loader.get_source(self, name)[1] File "C:\Python34\lib\site-packages\flask-0.11.1-py3.4.egg\flask\templating.py", line 57, in get_source return self._get_source_fast(environment, template) File "C:\Python34\lib\site-packages\flask-0.11.1-py3.4.egg\flask\templating.py", line 82, in _get_source_fast return loader.get_source(environment, template) File "C:\Python34\lib\site-packages\jinja2-2.8-py3.4.egg\jinja2\loaders.py", line 175, in get_source contents = f.read().decode(self.encoding) UnicodeDecodeError: 'utf-8' codec can't decode byte 0x93 in position 267: invalid start byte 127.0.0.1 - - [22/Sep/2016 13:26:14] "GET / HTTP/1.1" 500 -

Index.html:

{% extends "layout.html" %} {% block content %} <!--Enter Name --> <div class="enter-name"> <div class="grid-100"> <img src="/static/img/bear_avatar.svg" class="bear-avatar" /> </div> <div class="grid-100"> <form action="{{url_for(“save”)}}" method="POST"> <label>Name your bear</label> <input type="text" name="name" value="" autofocus> <input type="submit" value="Let's build it!"> </form> </div> </div> {% endblock %}

Please help me with this.