Staking-deposit-cli trouble

Hi everyone,

Trying to setup a Prater validator node.

I downloaded the staking-deposit-cli for mac OS but I’m getting this error message as I try to run ./deposit new-mnemonic --num_validators 1 --chain prater from the folder :

Error loading Python lib '/var/folders/_q/80fy0fyx2rn44k38zkp0n_9r0000gn/T/_MEIO6Lg40/Python': dlopen: dlopen(/var/folders/_q/80fy0fyx2rn44k38zkp0n_9r0000gn/T/_MEIO6Lg40/Python, 10): no suitable image found.  Did find:
    /var/folders/_q/80fy0fyx2rn44k38zkp0n_9r0000gn/T/_MEIO6Lg40/Python: cannot load 'Python' (load command 0x80000034 is unknown)
    /private/var/folders/_q/80fy0fyx2rn44k38zkp0n_9r0000gn/T/_MEIO6Lg40/Python: cannot load 'Python' (load command 0x80000034 is unknown)

I am running OS 10.14.6 Mojave, Python 3.8.5 / pip 20.2.4 are installed

Am I doing something wrong?
Could it be some package is incompatible with Mojave ?

Thanks for your help!