I have Adruino Uno board bought recently to use it in a project. I am using Platform IO in Windows 10. And, I am getting following error. I did loop back test and verified the board is working fine, and it is picking up correct com port (set to 115200, 8 Data bits, None Parity, 1 Stop bits, None Flow Control) but every time I try to load firmware I get this error. Any suggestion and help will be highly appreciated.