During the last 6 hours, a user has been trying to create a transaction using Bitcoin Core but it always shows '0/unconfirmed, not in memory pool' in the transaction details.
The node is fully synced and the user created a new transaction with a tip of 0.00040000 BTC per kilobyte, which is higher than the displayed values in mempool.space.
However, even after waiting for more than 2 hours, the transaction remains unconfirmed and not in the memory pool.
The transaction details show a debit of -0.04472912 BTC, a transaction fee of -0.00013480 BTC, and a net amount of -0.04486392 BTC.