I have downloaded and fully synced with my Mac last Saturday, my Bitcoin Core version is v0.21.0 and my Bitcoin-Qt version 5.9.8.
I did run other RPC commands such as “getrpcinfo” and it did provide result:
{
“active_commands”: [
{
“method”: “getrpcinfo”,
“duration”: 72
}
],
“logpath”: “/Users/jsjs77/Library/Application Support/Bitcoin/debug.log”
}
“getbalance” –

{
“mine”: {
“trusted”: 0.00000000,
“untrusted_pending”: 0.00000000,
“immature”: 0.00000000
}
}
But then, when I want to run this “generatetoaddress nblocks “address” it does not provide block hash result:

generatetoaddress 11 1MDihWw2UfkYyAwrQDWNFbmaH6bx4NBFtL

[
]
I have tried the following methods:
bitcoin-cli generatetoaddress 11 1MDihWw2UfkYyAwrQDWNFbmaH6bx4NBFtL.

Method not found (code -32601)
and
bitcoin-cli -regtest generatetoaddress 11 1MDihWw2UfkYyAwrQDWNFbmaH6bx4NBFtL
Method not found (code -32601)
Is this got to do with the changes of latest version? I really need help. Thanks