reaching endpoint in my nodejs

reaching endpoint in my nodejs

hi, I have. this route in my node.js 

router.get('/health', async (req, res, next) => {
res.send({ msg: 'healthy af' })
}


I tested that route with postman and. it works fine.
Now I want to call that api in zoho using custom function 

header_data = Map();
header_data.put("Content-Type", "application/json");

file_object = invokeurl
[
type :GET
headers:header_data
];

info file_object;
return file_object;

And I got this 

Icon

Access denied

Access control configuration prevents your request from being allowed at this time. Please contact your service provider if you feel this is incorrect.

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Can you tell me what this error means? Thank you