I have been doing an assignment on Bitcoin Core 0.20. Now every time I try to do a transaction:
Apples-iMac:bitcoin apple$ bitcoin-cli -regtest sendtoaddress bcrt1qd3jck0lv87yuk25tk3xy5rqq67apwasee874xk 25 error code: -4 error message: Fee estimation failed. Fallbackfee is disabled. Wait a few blocks or enable -fallbackfee.
Can some one help me – what should I change? Please give a step by step guide as I am a complete newcomer.