HTTP GET request to the any API

Hey.

I wanted to make an HTTP GET request to the Matrix42 API, to get IDs from our ticket and create a link, when someone sends a TicketNumber in the chat.
I implemented the IPreMessageSentModify interface and try to call the get request with HTTP interface (IHttp) that was provided by the method.

The response I get from the API in rocket.chat is null while the request from Postman or AdvancedRestClient is filled.

The way I try to do the request

const response = await this.http.get(`${this.requestUrl}`, {
        params: {
            where: `TicketNumber='${ticketId}'`,
            columns: requestColumns,
        },
        headers: {
            'Authorization': `Basic ${base64Login}`,
            'User-Agent': 'Rocket.Chat-App-Engine',
        },
    });

On Server-Log I get the following message:

The App a12ee379-93af-4a70-8a2c-78a1c0f5fef9 is requesting from the outter webs: {
  appId: 'a12ee379-93af-4a70-8a2c-78a1c0f5fef9',
  method: 'get',
  url: 'https://servicestore.damp.local/M42Services/api/data/fragments/SPSActivityClassBase',
  request: {
    params: {
      where: "TicketNumber='PRB00002'",
      columns: 'TicketNumber,ID,UsedInTypeSPSActivityTypeGroupTicket.ID AS ticketId'
    },
    headers: {
      Authorization: 'Basic YS5hbHBhdHNrb3Y6aDZzbS5ianMxcm5L',
      'User-Agent': 'Rocket.Chat-App-Engine'
    },
    npmRequestOptions: {}
  }
}

Has anyone an idea why I get a null response?

I just want to know if I’m doing the requests in the right away … I’m not logging in or something like that I just make an axios Kodi nox