Error when trying to flash my ESP-01s

I am trying to flash ESPHome on my ESP-01s.

These are my components:

ESP-01s:

USB Serial Adapter:

I have put the USB Adapter into my machine running homeassistant. When trying to flash the device with ESPHome, I get the following error:

ERROR Running command failed: Failed to connect to ESP8266: Serial data stream stopped: Possible serial noise or corruption.
For troubleshooting steps visit: https://docs.espressif.com/projects/esptool/en/latest/troubleshooting.html
ERROR Please try running esptool.py --before default_reset --after hard_reset --baud 115200 --port /dev/ttyUSB1 --chip esp8266 write_flash -z --flash_size detect 0x0 /data/build/esp8266-keller/.pioenvs/esp8266-keller/firmware.bin locally.

I have also tried to flash the firmware using a linux notebook by typing
esptool.py --before default_reset --after hard_reset --baud 115200 --port /dev/ttyUSB1 --chip esp8266 write_flash -z --flash_size detect 0x0 /data/esp8266-keller.bin

Then I get a similar error:
A fatal error occurred: Failed to connect to ESP8266: Serial data stream stopped: Possible serial noise or corruption. For troubleshooting steps visit: https://docs.espressif.com/projects/esptool/en/latest/troubleshooting.htm