[1/5] C:\Windows\system32\cmd.exe /C "cd /D C:\Users\Dell\Documents\ESP\Keyboard_lights_2\build\esp-idf\esptool_py && C:\Espressif\tools\python_env\idf5.4_py3.11_env\Scripts\python.exe C:/Espressif/frameworks/v5.4.1/esp-idf/components/partition_table/check_sizes.py --offset 0x8000 partition --type app C:/Users/Dell/Documents/ESP/Keyboard_lights_2/build/partition_table/partition-table.bin C:/Users/Dell/Documents/ESP/Keyboard_lights_2/build/Keyboard_lights_2.bin" Keyboard_lights_2.bin binary size 0xf28c0 bytes. Smallest app partition is 0x100000 bytes. 0xd740 bytes (5%) free. [2/5] Performing build step for 'bootloader' [1/1] C:\Windows\system32\cmd.exe /C "cd /D C:\Users\Dell\Documents\ESP\Keyboard_lights_2\build\bootloader\esp-idf\esptool_py && C:\Espressif\tools\python_env\idf5.4_py3.11_env\Scripts\python.exe C:/Espressif/frameworks/v5.4.1/esp-idf/components/partition_table/check_sizes.py --offset 0x8000 bootloader 0x0 C:/Users/Dell/Documents/ESP/Keyboard_lights_2/build/bootloader/bootloader.bin" Bootloader binary size 0x5220 bytes. 0x2de0 bytes (36%) free. [3/5] No install step for 'bootloader' [4/5] Completed 'bootloader' [4/5] C:\Windows\system32\cmd.exe /C "cd /D C:\Espressif\frameworks\v5.4.1\esp-idf\components\esptool_py && C:\Espressif\tools\tools\cmake\3.30.2\bin\cmake.exe -D IDF_PATH=C:/Espressif/frameworks/v5.4.1/esp-idf -D SERIAL_TOOL=C:/Espressif/tools/python_env/idf5.4_py3.11_env/Scripts/python.exe;;C:/Espressif/frameworks/v5.4.1/esp-idf/components/esptool_py/esptool/esptool.py;--chip;esp32s3 -D SERIAL_TOOL_ARGS=--before=default_reset;--after=hard_reset;write_flash;@flash_args -D WORKING_DIRECTORY=C:/Users/Dell/Documents/ESP/Keyboard_lights_2/build -P C:/Espressif/frameworks/v5.4.1/esp-idf/components/esptool_py/run_serial_tool.cmake" esptool.py --chip esp32s3 -p COM4 -b 460800 --before=default_reset --after=hard_reset write_flash --flash_mode dio --flash_freq 80m --flash_size 2MB 0x0 bootloader/bootloader.bin 0x10000 Keyboard_lights_2.bin 0x8000 partition_table/partition-table.bin esptool.py v4.8.1 Serial port COM4 A fatal error occurred: Could not open COM4, the port is busy or doesn't exist. (could not open port 'COM4': FileNotFoundError(2, 'The system cannot find the file specified.', None, 2)) Hint: Check if the port is correct and ESP connected FAILED: CMakeFiles/flash C:/Users/Dell/Documents/ESP/Keyboard_lights_2/build/CMakeFiles/flash C:\Windows\system32\cmd.exe /C "cd /D C:\Espressif\frameworks\v5.4.1\esp-idf\components\esptool_py && C:\Espressif\tools\tools\cmake\3.30.2\bin\cmake.exe -D IDF_PATH=C:/Espressif/frameworks/v5.4.1/esp-idf -D SERIAL_TOOL=C:/Espressif/tools/python_env/idf5.4_py3.11_env/Scripts/python.exe;;C:/Espressif/frameworks/v5.4.1/esp-idf/components/esptool_py/esptool/esptool.py;--chip;esp32s3 -D SERIAL_TOOL_ARGS=--before=default_reset;--after=hard_reset;write_flash;@flash_args -D WORKING_DIRECTORY=C:/Users/Dell/Documents/ESP/Keyboard_lights_2/build -P C:/Espressif/frameworks/v5.4.1/esp-idf/components/esptool_py/run_serial_tool.cmake" ninja: build stopped: subcommand failed.