ESP8266 Wifi VGA Clock Code problem

Projects Programming
1

Hi, my Code isn´t working, because I don´t understand how to convert data types. I have tried countless internet tutorials, but the more I search, the less I understand about converting them.
I get this error while compiling: cannot convert 'String' to 'const void*'
I want to make a clock, that is displayed on a VGA Monitor. The ESP get´s the time via Wifi.
Sorry for my bad English btw.
Thanks for any help!
Henry

My Code:

#include <ESPVGAX.h>
#include <fonts/monodos12.h>
#include <NTPClient.h>

#include <ESP8266WiFi.h>
#include <WiFiUdp.h>

WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP);

ESPVGAX vga;

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

const ESPVGAX_ALIGN32 char str0[] PROGMEM="Starting up...";
String stringOne;

void setup() {

  Serial.begin(115200);

  WiFi.begin(ssid, password);

  while ( WiFi.status() != WL_CONNECTED ) {
    delay ( 500 );
    Serial.print ( "." );
  }

  timeClient.begin();
  
  vga.begin();
  
  vga.setBitmapFont((uint8_t*)img_monodos12_data, 12);
  vga.print_P(str0, 150, 150, true);
  delay(5000);
}


void loop() {
  timeClient.update();

//  Serial.println(timeClient.getFormattedTime());
  stringOne = timeClient.getFormattedTime();
  Serial.println(stringOne);

  char* henry;
  henry = (char*) malloc(20);
  memcpy(henry, stringOne, 2);
  
  vga.setBitmapFont((uint8_t*)img_monodos12_data, 12);
  vga.print_P(stringOne, 150, 150, true);
  
  delay(1000);
}
2

use stringOne.c_str()