HttpErrorResponse {
    headers: HttpHeaders,
    status: 0,
    statusText: "Unknown Error",
    url: "https://my.pc.dev.my-org.com/my-app/FrontControllerServlet?method=getUserNumber",
    ok: false
}
error: ProgressEvent {
    isTrusted: true,
    lengthComputable: false,
    loaded: 0,
    total: 0,
    type: "error"
}
headers: HttpHeaders {
    normalizedNames: Map(0),
    lazyUpdate: null,
    headers: Map(0)
}
message: "Http failure response for https://my.pc.dev.my-org.com/my-app/FrontControllerServlet?method=getUserNumber: 0 Unknown Error"
name: "HttpErrorResponse"
ok: false
status: 0
statusText: "Unknown Error"
url: "https://my.pc.dev.my-org.com/my-app/FrontControllerServlet?method=getUserNumber"
__proto__: HttpResponseBase