steem 0.20.3 first problem !

Hi everyone, anyone here knows how to setup testnet for steemit ?
I happen to have set it up,
but when i create account on it .. i get this error

  Assert Exception:o.fee == wso.median_props.account_creation_fee: Must pay the exact account creation fee. paid: {"amount":"30","precision":3,"nai":"@@000000021"} fee: {"amount":"1","precision":3,"nai":"@@000000021"}  

it looks like related to account creation fee
and I don't know how to update account fee to match with that they have specified in there