Board flashing error

I am trying to flash the octopus on my V3.1 and i keep getting

Octopus V1.1 detected but is unresponsive.
Klipper doesn't seem to be running on your board, which may indicate faulty firmware or a faulty board. Please check your board and try flashing it again.

trying to flash after doesnt work and i once saw the start of a script error in red

Any ideas what to try