when i use pubsub shutdown ipfs will bug

[vyouzhis]

nohup ipfs daemon --enable-pubsub-experiment --enable-namesys-pubsub > nohup.out

root@4b49ea53b543:~# cat nohup.out
Initializing daemon...
Kubo version: 0.18.1
Repo version: 13
System version: amd64/linux
Golang version: go1.19.1
2023-05-04T06:33:14.126Z ERROR cmd/ipfs ipfs/daemon.go:406 Private networking (swarm.key / LIBP2P_FORCE_PNET) does not work with public HTTP IPNIs enabled by Routing.Type=auto. Kubo will use Routing.Type=dht instead. Update config to remove this message.
go-libp2p resource manager protection disabled
Swarm is limited to private network of peers with the swarm key
Swarm key fingerprint: 5563f4bb81734cca734ff7565b478edb
Swarm listening on /ip4/127.0.0.1/tcp/4001
Swarm listening on /ip4/127.0.0.1/tcp/4003/ws
Swarm listening on /ip4/172.17.0.3/tcp/4001
Swarm listening on /ip4/172.17.0.3/tcp/4003/ws
Swarm listening on /p2p-circuit
Swarm announcing /ip4/127.0.0.1/tcp/4001
Swarm announcing /ip4/127.0.0.1/tcp/4003/ws
Swarm announcing /ip4/172.17.0.3/tcp/4001
Swarm announcing /ip4/172.17.0.3/tcp/4003/ws
API server listening on /ip4/0.0.0.0/tcp/5001
WebUI: http://0.0.0.0:5001/webui
Gateway (readonly) server listening on /ip4/0.0.0.0/tcp/8080
Daemon is ready
2023-05-04T06:33:46.039Z ERROR swarm2 swarm/swarm.go:215 error when shutting down listener: close tcp4 0.0.0.0:4003: use of closed network connection
2023-05-04T06:34:14.161Z ERROR cmd/ipfs ipfs/daemon.go:588 failed to access config: cannot access config, repo not open
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x1a8 pc=0x21339b7]

goroutine 838 [running]:
main.daemonFunc.func7()
github.com/ipfs/kubo@v0.18.1/cmd/ipfs/daemon.go:590 +0xb7
created by time.goFunc
time/sleep.go:176 +0x32

`public static void main(String[] args) {

test();

}

private static void test() {
IPFS _ipfs = new IPFS("ip...", 5001);
String topic = "uL3JlY29yZC9MMmx3Ym5NdkFDUUlBUklnZk5RSjdHS0xGN2tBeU9XVzh4dHg2NG16SC1CdUlWazdrQUhwTDhsdXdpOA";
Consumer<Map<String, Object>> results = new Consumer<Map<String,Object>>() {

    @Override
    public void accept(Map<String, Object> arg0) {
        // TODO Auto-generated method stub
        System.out.println(arg0);
        
    }
    
};
Consumer<IOException> error = new Consumer<IOException>() {

    @Override
    public void accept(IOException arg0) {
        // TODO Auto-generated method stub
        System.out.println(arg0);
        throw new UnsupportedOperationException("Unimplemented method 'accept'");
    }
    
};
ThreadPoolExecutor executor = (ThreadPoolExecutor) Executors.newFixedThreadPool(1);
executor.submit(() -> {
    try {
        _ipfs.pubsub.sub(topic, results, error);
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
});


try {
    Thread.sleep(10000);
} catch (InterruptedException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}
System.out.println("shutdown");
try {
    _ipfs.shutdown();
} catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

}`

[vyouzhis]

oh, yeah, i guess the err
can i add any code in here