Since yesterday I've been getting an error while trying to create a shipping label.
This is the message I get:
There was a problem buying shipping labels
Review order details and try again.
And right under it this message: A system error has occurred and is being investigated.
However it doesn't say what the error is or what need to be modified. This is the first time that I'm seeing this problem. I already tried deleting the cache and cookies. Please advise as this is creating a great inconvenience for my store.