Problem uploading to VEX5 Brain from PROS

I’m new to PROS, which I have successfully installed on my Linux Ubuntu machine. I am using the default program when a new project is created. It builds fine without errors but when I try to upload it to the VEX5 brain I get the following error:
‘utf-8’ codec can’t decode byte 0xff in position 0: invalid start byte

I think that my physical connection is good because I can do a Capture Image from the brain screen.

Any suggestions are welcome.

Can you run the upload command again with the --debug flag? Full command would be pros upload --debug. DM me the output because I’m expecting it to be very long.