I'll repost all my question because I descovered the problem is the SSL access as pointed by a user here. So I already don't received more 308 message, but my ESP8266 crashes wen I try to access any "https" website.

I'm using this code to try to access:

const char* endpoint = "https://hvilela.com:443/api/data/all";

void onClientStateChange(void* arguments,
                         asyncHTTPrequest* aReq,
                         int readyState) {
  Serial.println(readyState);
  switch (readyState) {
    case 0:
      // readyStateUnsent     // Client created, open not yet called
      break;

    case 1:
      // readyStateOpened     // open() has been called, connected
      break;

    case 2:
      // readyStateHdrsRecvd  // send() called, response headers available
      break;

    case 3:
      // readyStateLoading    // receiving, partial data available
      break;

    case 4:
      // readyStateDone       // Request complete, all data available.

#ifdef SERIAL_DEBUG
      Serial.println(aReq->responseHTTPcode());
#endif
      if (aReq->responseHTTPcode() != 200) {
#ifdef SERIAL_DEBUG
        Serial.println("return");
#endif
        return;
      }
      String response = aReq->responseText();
#ifdef SERIAL_DEBUG
      Serial.println(response.c_str());
#endif
      break;
  }
}

void setupClient() {
  
  String URL2 =  endpoint; 

  client2.setTimeout(5);
  client2.setDebug(true);
  client2.onReadyStateChange(onClientStateChange);

  client2.open("GET", URL2.c_str());
  client2.send();

  delay(1000);
  Serial.println("[Client setup end]");
}

by accessing this endpoint, I need to receive a 410 Unauthorized message. Works perfectly in web browsers, but not in ESP8266.

Additionally, I'm using PlatformIO VSCode plugin to program.