Hi, did you make your own statblock or are you using an existing template? If the latter, which one is it (exact name)?

Using an existing one. I believe it's "Background (Tales of the Valiant)"

I'm having the same issue with creating Statblocks in my character view
I've tried to use both generic templates as well as 5e templates via the quick create and also the side bar.
This is only reproducable if I'm in a character view. If i'm editing my world, I have no issue creating statblocks

The only difference between this bug and my bug is that I'm getting a "Statblock creation failed!" error message in the character view.
I've been using "Character Background" as my name, or i've tried using "test" on several templates all to the same effect.