Blank Api response and no errors

Hi. I am working on my first Arduino project and I would like to retrieve some data from the coinmarketcap API. I am using an ESP8266 module, which is correctly connected to the WiFi, and I have followed the documentation of the coinmarketcap library for Arduino, but so far I am not getting any response. On the other hand, I am also not getting any error.

Could you please have a look at my code to maybe find out what am I missing?

#include <ArduinoJson.h>
#include <CoinMarketCapApi.h>
#include <LiquidCrystal.h>
#include <WiFiClientSecure.h>
#include <ESP8266WiFi.h>

WiFiClientSecure client;
CoinMarketCapApi api(client);

const char* ssid = "*****";
const char* password = "*****";

unsigned long api_mtbs = 60000;
unsigned long api_due_time = 0;

LiquidCrystal lcd(D6, D5, D1, D2, D3, D4); 


void setup()
{
  Serial.begin(9600);
  Serial.setDebugOutput(true);

  WiFi.mode(WIFI_STA);
  WiFi.disconnect();
  delay(100);

  Serial.print("Connecting to ");
  Serial.println(ssid);
  
  WiFi.begin(ssid, password);
  
  while (WiFi.status() != WL_CONNECTED)
  {
    delay(500);
    Serial.print(".");
  }

  Serial.println("");
  Serial.println("WiFi connected");  
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
  Serial.println(client);
  lcd.print("connected");
}

void printApiData(String ticker) {
  Serial.println("...");
  Serial.println("Requesting " + ticker);

  CMCTickerResponse response = api.GetTickerInfo(ticker);
  
  if (response.error = "") {

    Serial.print("name: ");
    Serial.println(response.name);
    Serial.println(response.id);
    Serial.println(response.price_usd);
  } else {
    Serial.print("Error while fetching data: ");
    Serial.println(response.error);
  }
}

void loop() {
  unsigned long timeNow = millis();
  if ((timeNow > api_due_time)) {
    printApiData("ethereum");
    api_due_time = timeNow + api_mtbs;
  }
}

I think you mean:
if (response.error == "") {

Indeed, thanks for spotting that.

The problem seems to be that it doesn't not parse any JSON file. I thought the parsing was handled by the CoinMarketCapApi Library, but apparently is not.