Method not found when trying to create a wallet on bitcoin core

Here is my commands:

roro@roro-mainVirtualBox:~$ bitcoin-cli createwallet false
error code: -32601
error message:
Method not found

and also

roro@roro-mainVirtualBox:~$ bitcoin-cli help createwallet
help: unknown command: createwallet

which is weird, I just did a fresh install from source from version Bitcoin Core version v25.1

My bitcoin.conf just contain this:

roro@roro-mainVirtualBox:~$ cat ~/.bitcoin/bitcoin.conf
testnet=1
txindex=1

and getblockchaininfo give us this:

roro@roro-mainVirtualBox:~$ bitcoin-cli getblockchaininfo
{
  "chain": "test",
  "blocks": 2539470,
  "headers": 2539470,
  "bestblockhash": "0000000000000012dad1aac0ffd50ef93c1ef0dddb268f88b9caee9a0c474939",
  "difficulty": 95840818.12092932,
  "time": 1700495295,
  "mediantime": 1700492332,
  "verificationprogress": 0.9999986106651072,
  "initialblockdownload": false,
  "chainwork": "000000000000000000000000000000000000000000000c030f46d429a6b8e76a",
  "size_on_disk": 33390875824,
  "pruned": false,
  "warnings": ""
}

The only thing special is that following this tutorial https://github.com/BlockchainCommons/Learning-Bitcoin-from-the-Command-Line/blob/master/03_3_Setting_Up_Your_Wallet.md

I tried bitcoin-cli -named createwallet wallet_name="" descriptors=false which gave the same error, and also played with this computer network, but I dont think that is linked.