수업 그대로 따라하는데
http://localhost:5000/ 로 확인시

아래와 같은 오류가 발생합니다.

TemplateNotFound

jinja2.exceptions.TemplateNotFound: index.html


Traceback (most recent call last)
File "C:\Users\H\Desktop\sparta\projects\mars\venv\lib\site-packages\flask\app.py", line 2548, in __call__
return self.wsgi_app(environ, start_response)
File "C:\Users\H\Desktop\sparta\projects\mars\venv\lib\site-packages\flask\app.py", line 2528, in wsgi_app
response = self.handle_exception(e)
File "C:\Users\H\Desktop\sparta\projects\mars\venv\lib\site-packages\flask\app.py", line 2525, in wsgi_app
response = self.full_dispatch_request()
File "C:\Users\H\Desktop\sparta\projects\mars\venv\lib\site-packages\flask\app.py", line 1822, in full_dispatch_request
rv = self.handle_user_exception(e)
File "C:\Users\H\Desktop\sparta\projects\mars\venv\lib\site-packages\flask\app.py", line 1820, in full_dispatch_request
rv = self.dispatch_request()
File "C:\Users\H\Desktop\sparta\projects\mars\venv\lib\site-packages\flask\app.py", line 1796, in dispatch_request
return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)
File "C:\Users\H\Desktop\sparta\projects\mars\app.py", line 6, in home
return render_template('index.html')
File "C:\Users\H\Desktop\sparta\projects\mars\venv\lib\site-packages\flask\templating.py", line 146, in render_template
template = app.jinja_env.get_or_select_template(template_name_or_list)
File "C:\Users\H\Desktop\sparta\projects\mars\venv\lib\site-packages\jinja2\environment.py", line 1081, in get_or_select_template
return self.get_template(template_name_or_list, parent, globals)
File "C:\Users\H\Desktop\sparta\projects\mars\venv\lib\site-packages\jinja2\environment.py", line 1010, in get_template
return self._load_template(name, globals)
File "C:\Users\H\Desktop\sparta\projects\mars\venv\lib\site-packages\jinja2\environment.py", line 969, in _load_template
template = self.loader.load(self, name, self.make_globals(globals))
File "C:\Users\H\Desktop\sparta\projects\mars\venv\lib\site-packages\jinja2\loaders.py", line 126, in load
source, filename, uptodate = self.get_source(environment, name)
File "C:\Users\H\Desktop\sparta\projects\mars\venv\lib\site-packages\flask\templating.py", line 62, in get_source
return self._get_source_fast(environment, template)
File "C:\Users\H\Desktop\sparta\projects\mars\venv\lib\site-packages\flask\templating.py", line 98, in _get_source_fast
raise TemplateNotFound(template)
jinja2.exceptions.TemplateNotFound: index.html

The debugger caught an exception in your WSGI application. You can now look at the traceback which led to the error.

To switch between the interactive traceback and the plaintext one, you can click on the "Traceback" headline. From the text traceback you can also create a paste of it. For code execution mouse-over the frame you want to debug and click on the console icon on the right side.

You can execute arbitrary Python code in the stack frames and there are some extra helpers available for introspection:

dump() shows all variables in the frame
dump(obj) dumps all that's known about the object