T-beam supreme serial.print()

I cannot make the TTGO T-beam supreme write to the serial port. After successfully uploading a sketch it always shows:
ESP-ROM:esp32s3-20210327
Build:Mar 27 2021
rst:0x15 (USB_UART_CHIP_RESET),boot:0x8 (SPI_FAST_FLASH_BOOT)
Saved PC:0x4202639e
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fce3808,len:0x44c
load:0x403c9700,len:0xbe4
load:0x403cc700,len:0x2a68
entry 0x403c98d4

How to set the right mode or whatever leads to the output of the sketch on the serial monitor.

yamsboat

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