WD on RPi3: sudo ./GoWdconsole.sh Command not found

This seems like a rube’s error.
Terminal open in consolewdfiles and when I run

sudo ./GoWdconsole.sh

I get a “command not found”.

:~/Downloads/WD/consolewdfiles $ sudo ./GoWdconsole.sh sudo: ./GoWdconsole.sh: command not found
I suspect I'm missing something seriously basic but can't spot it.

make sure you are using the correct consolewd version
i,e the 64 bit raspberry pi version…for the raspberry pi 3