UART not responding under OSC BYPASS Mode.

Hello Guys,

I am trying to setup UART under oscillator bypass mode in STM32f446RE Nucleo Board. I have created a new project in CubeIDE with UART under Asynchronous mode. I have commented out the SystemClock_Config and written my code for oscillator bypass mode even though everything can be done via code generation tool ( Part of learning ). But UART is not responding. Please find the below-attached project.

char data[] = "PK is Working\r\n";
 
int main(void)
{
 HAL_Init();
 //SystemClock_Config();
 
 RCC_OscInitTypeDef Osc = {0};
 RCC_ClkInitTypeDef Clk = {0};
 
 Osc.OscillatorType = RCC_OSCILLATORTYPE_HSE;
 Osc.HSEState = RCC_HSE_BYPASS;
 HAL_RCC_OscConfig(&Osc);
 
 Clk.ClockType = RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
 Clk.AHBCLKDivider = RCC_SYSCLK_DIV2;
 Clk.SYSCLKSource = RCC_SYSCLKSOURCE_HSE;
 Clk.APB1CLKDivider = RCC_HCLK_DIV2;
 Clk.APB2CLKDivider = RCC_HCLK_DIV2;
 
 HAL_RCC_ClockConfig(&Clk, FLASH_ACR_LATENCY_0WS);
 
 __HAL_RCC_HSI_DISABLE();
 
 HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
 HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
 
 
 
 MX_GPIO_Init();
 MX_USART2_UART_Init();
 
 while (1)
 {
 HAL_UART_Transmit(&huart2, (uint8_t*) data, sizeof(data), HAL_MAX_DELAY);
 }
}