Error : Response must contain an array or object at "feed.entry". amp-list

### Description

I am getting this error while making amp list with _CORS proxy_
https://cdn.nixs.in/cdn/cors/?url=https://www.nixs.in/feeds/posts/default?alt=json
my code
`

`

its returns `**Response must contain an array or object at "feed.entry". amp-list**`
but my array object in the **feed.entry** location


### Reproduction Steps

I found few links where some solution given but no one work for me

https://stackoverflow.com/questions/49020895/how-to-remove-this-error-response-must-contain-an-array-at-while-making

https://github.com/ampproject/amphtml/issues/10613

https://github.com/ampproject/amphtml/issues/9687

here is my code https://jsbin.com/yoruvalego/edit?html,js,output

### Relevant Logs

_No response_

### Browser(s) Affected

Chrome

### OS(s) Affected

_No response_

### Device(s) Affected

_No response_

### AMP Version Affected

_No response_

Start with the AMP list markup in the issue and reproduce it using the linked JSBin. Inspect the response returned by the CORS proxy and how the `feed.entry` path is read, then compare that with the reported error and linked prior issues. Done means the reproduction no longer reports the response-shape error with the provided feed.

Written by the indexing model from the issue text.