This transfer was declined by your bank Cash App because there were server issues. Whenever you transfer money from your Cash App account, you need to check the bank's server because sometimes it is down and does not respond to the Cash App.
In such a situation, you should not make a transaction from your Cash App account. The bank declines some Cash App transfer because it has because your card. If your cash app transfer is declined by the bank or cash app failed to add money, you will need to contact the bank's executive.