Can’t manage rows

I just set up two tables. After finishing them I wanted to add more rows to both of them. When I click the green button to manage table, nothing happens. I see some errors in the js console. I thought it might be because I duplicated one from the other, but I just did a test table and duplicated that, and the green button worked.

I’m not sure what caused it. I wish I could provide more steps I took, but I don’t know exactly when the button stopped working.