Shopify proxy is not working with manifest.json (shopify and laravel)

I’m a beginner in Shopify and trouble with Shopify proxy

Front Store: https://bhavin.myshopify.com

App Store: https://myapp.ngrok.io (Laravel)

I want to add two files (custom js and manifest.json) in my front store.

Install and authentication is working fine

I’m adding manifest.json something like that

var link    =   document.createElement('link');
link.rel    =   'manifest';
link.href   =   'https://myapp.ngrok.io/manifest.json';
document.head.appendChild(link);

1. Without proxy

manifest.json file added properly but throw error something like that

Access to resource at 'https://myapp.ngrok.io/manifest.json' from origin 'https://bhavin.myshopify.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.


2. With Proxy

Subpath prefix: apps
Subpath:        cnv
Proxy URL:      https://myapp.ngrok.io/proxy

Now my manifest.json file path is https://bhavincb.myshopify.io/apps/cnv/manifest.json

Url is working fine if I’m logged in the admin panel
If I open that URL when I’m not logged in then it returns
This page isn’t working with HTTP ERROR 401

In my front store while load manifest file it is showing something like that (when logged in)

Manifest: Line: 1, column: 1, Unexpected token.

There is not any error in manifest.json

I’m using Laravel Shopify package

As of I know, I guess I’m doing something wrong with a proxy configuration.

Does anyone have a solution?

Any help will appreciate