Problem with proxy and ionic 4

Hey I have started using ionic with version 4 beta and came up with a CROS issue where I want to access another API as my local one (where I have access to). So I read this article: and So after reading those I added this to my ionic.config.json:

  "proxies": [
      "path": "/igdb",
      "proxyUrl": ""

and then I modified my http post like this:

        `search "${event.detail.value}"; fields game; limit 8;`,
          headers: {
            'user-key': 'xxxxxxxxxxxxxx'
        (response: any) => {
        (error: any) => {
          console.log('(GamesSearchModal.searchGame) => ERROR:', error);

but this does not work. I get a message: "Http failure response for (unknown url): 0 Unknown Error" I know ionic 4 is in beta but is there something that is not yet added to the v4 docs that I have missed?


did you come up with a solution? I am having the same issue.