Outputs "TemplateDoesNotExist at /" on django 2.0.3. What's the matter?

Question

Django

Hello, I recently started learning django before I studied python and decided to become a django developer for myself. Since there are no adequate and normal lessons for django v2.0.3, I decided on my own, of course, relying on later version courses and making adjustments to the syntax, the following problem pops up: when you go to the main page (of course I made an application on my site) like this error TemplateDoesNotExist at /

already tried and instead

path( '', include('mainPages.urls' )) # вместо пустых скобок ставил: '/' не помогло

it just says "page not found". So I came here in the hope of understanding more senior django developers in my rank. Best wishes to whoever helps.

Answer 1

Thank you very much for giving me your time and pointing out the typo: I wrote templates instead of tamplates.
Special thanks to Rostislav Grigoriev with comment

> tamplates
Here's a typo

Answer 2

Put it in the templates folder, like just make a templates folder in the application and put this template there, then check your mainPS in INSTALLED_APPS