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                         [--flash_mode {keep,qio,qout,dio,dout}]
                         [--flash_size FLASH_SIZE]
                         [--spi-connection SPI_CONNECTION]
                         [--target-offset TARGET_OFFSET]
                         [--fill-flash-size FILL_FLASH_SIZE]
                         <address> <filename> [<address> <filename> ...]
esptool merge_bin: error: argument <address> <filename>: [Errno 21] Is a directory: 'build/partition_table'
Cleaning up project directory and file based variables
ERROR: Job failed: exit code 1