Error not displayed with 'Content-Type': 'application/x-www-form-urlencoded'

[Samox]

Loopback doesn't catch errors when there are discrepancies between datasources.local.js and datasources.json such as:
in datasources.local.js:

functions: {
  getToken: []
},
template: {
  method: 'POST',
  url: process.env.API_URL + 'oauth/token',
  body: {
    client_id: 'id',
    client_secret: 'secret'
  },
  headers: {
    'Content-Type': 'application/x-www-form-urlencoded'
  }
}

and in datasources.json:

"template": {
  "method": "POST",
  "url": "http://0.0.0.0:3394/api/oauth/token/"
},
"functions": {
  "getToken": []
}

The request is made in the connector
loopback:connector:rest Transformed request: {}...
loopback:connector:rest Request: {}...
But no response, nor error, nor crash. No idea what is happening.

Finally, when I added the headers in datasources.json, the error 'uncaughtException: first argument must be a string or Buffer' appeared.
I guess there are other error messages that are not displayed when you have discrepancies in your config files.

I'd like to fix that to help you but I don't know where to look :)

[stale]

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