Django not load sencha index.html - django

I am trying to run an ExtJS 7 app using and django 3 as backend.
The same index.html created by sencha cmd loads and runs as expected.
But loading it with django backend it does not load and gives an error (described below).
I guesss it is related to csrf token.
index.html:
{% load static %}
<!DOCTYPE HTML>
<html manifest="">
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=10, user-scalable=yes">
<title>front</title>
<!-- The line below must be kept intact for Sencha Cmd to build your application -->
<script id="microloader"
data-app="eef86001-0c1f-47f8-bad2-962464cb0916"
type="text/javascript" src="{%static "bootstrap.js" %}" >
</script>
</head>
<body>
</body>
</html
Error in chrome:
bootstrap.js:868 GET http://127.0.0.1:8000/index/bootstrap.json?_dc=1576345210630 404 (Not Found)
VM52:1 Uncaught SyntaxError: Unexpected token < in JSON at position 0
at JSON.parse (<anonymous>)
at new Manifest (bootstrap.js:1949)
at Object.setManifest (bootstrap.js:2161)
at bootstrap.js:2141
at XMLHttpRequest.readyStateChange (bootstrap.js:854)
Thank you all for any help
Koby Peleg Hen
​

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