Getting an 'Error: found key without value' while setting up rclone with gdrive (on Debian 11 + Quickbox Pro script)

if using apt to install rclone, will be very old version.
in the past, gdrive changed the auth process and so rclone had to change.
i believe that change first appeared in v1.58.0

Google Cloud Storage
    Disable OAuth OOB flow (copy a token) due to Google deprecation (Nick Craig-Wood)
        See the deprecation note 57.

have you tried

which rclone
/usr/bin/rclone