The wallet will now automatically load from the your Bitcoin Core node. It may take a few seconds, during which you'll see "Reading wallet from blockchain...".
If JoinMarketQt stucks in "Reading wallet from blockchain..." state, close it.
You need to create a wallet in the Bitcoin Core using the command:
```bitcoin-cli createwallet "jm_wallet"```
The "jm_wallet" name is just an example. You can set any name.
After you create the wallet in the Bitcoin Core, you should set it in the `joinmarket.cfg`:
```rpc_wallet_file= jm_wallet```
Now you can start the JoinMarketQt, load the wallet and it should work.
Since you just created it, it will have no coins initially: