[BUG] Error when trying to create new round in a group

[francesca-sp]

Describe the bug
While in a group that has been toggled "yes" for subscription, when clicking on the button to start a new round, I get the following error message. This appears when I click the create button after filling in all fields of the round setup form.

This is the group I am using: https://cobudget.com/greaterthan-test/