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python 3.x - TemplateDoesNotExist at

I have a problem with REQUEST.

Add myapp, so that it recognizes the parameters in request, however, it keeps throwing me an error when reloading the page. What is the problem? Ilustration of problem in WEB CMD

Second problem def index(request):

def index(request):

html= """
    <h1>Inicio</h1>
    <p>A?os hasta 2050:</p>
    <ul>
"""
year =2021
while year<=2050:

    if year%2 == 0:

        html+=f"<li>{str(year)}</li>"
    year+=1
html +="</ul>"
#return HttpResponse(layout + html)
return render(request, 'index.html')

(Index function)

question from:https://stackoverflow.com/questions/65649765/templatedoesnotexist-at

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Inside settings.py

import os

BASE_DIR = os.path.dirname(os.path.dirname(__file__))
TEMPLATES = [
    {
        
        'DIRS': [os.path.join(BASE_DIR, 'templates'),
                 os.path.join(BASE_DIR, 'your_app_name','templates', 'your_app_name'),
                
                ]
    }
]

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