WPMU Cloner failing on multisite using directory multisites, not subdomains

Hi, there-- I'm getting a "too many redirects" error when I'm attempting to clone my main site "greenlightmaine.com" to a new site "greenlightmaine.com/season-two"

I've granted access in the WPMU back-end. Time is of the essence, as I need to make three copies to hand off to team members to start swapping out copy this evening. Thank you!