upload error

[alberiolima]

~/.arduino15/packages/bouffalo/tools/flasher/0.0.1/bl602-flasher.py /dev/ttyUSB0 /tmp/arduino_build_973495/teste1.ino.bin
java.io.IOException: Cannot run program "/home/alberio/.arduino15/packages/bouffalo/tools/flasher/0.0.1/bl602-flasher.py": error=13, Permission denied

solved
in ~/.arduino15/packages/bouffalo/hardware/riscv/0.0.1/platform.txt
tools.flasher.upload.pattern="{runtime.tools.python3.path}/python3" -I "{path}/{cmd}" "{serial.port}" "{build.path}/{build.project_name}.bin"

added "{runtime.tools.python3.path}/python3" -I