HTTPS requests dont work

When curling the url it works, so this has to be an issue either with a certificate that was generated or with anyproxy. Also, the certificate could not be read in android.

Rule:
```
"use strict";
const path = require("path");
const fetch = require("node-fetch");

module.exports = {
summary: "a rule to hack response",
*beforeSendResponse (requestDetail, responseDetail) { //eslint-disable-line

// OR Fetch from other request
if (requestDetail.url === "https://apiqa.com/config/config") {
return fetch("https://apiqa.com/config");
}
}
};

```
```
[AnyProxy ERROR][2018-11-20 15:09:45]: Send final response failed:Cannot read property 'header' of undefined
```

Response:
```

Response {
size: 0,
timeout: 0,
[Symbol(Body internals)]:
{ body:
Gunzip {
_readableState: [Object],
readable: true,
domain: null,
_events: [Object],
_eventsCount: 7,
_maxListeners: undefined,
_writableState: [Object],
writable: false,
allowHalfOpen: true,
_transformState: [Object],
bytesRead: 0,
_opts: [Object],
_chunkSize: 16384,
_flushFlag: 2,
_finishFlushFlag: 2,
_scheduledFlushFlag: 0,
_handle: [Object],
_hadError: false,
_buffer: ,
_offset: 0,
_level: -1,
_strategy: 0 },
disturbed: false,
error: null },
[Symbol(Response internals)]:
{ url: 'https://apiqa.vungle.com/api/v5/config',
status: 500,
statusText: 'Internal Server Error',
headers: Headers { [Symbol(map)]: [Object] } } }
```

Start by reproducing the provided beforeSendResponse rule and compare the curl result with the HTTPS request through AnyProxy. Trace the certificate handling and the path that produces “Cannot read property 'header' of undefined”; done means the request completes without that error and the certificate can be read in Android.

Written by the indexing model from the issue text.