Exception in main! Failed to initialize p2p server.
As a starting position, I have my monero GUI wallet running as a local node. Therefore, the monero deamon is already running.   When I issue the command `./monerod --zmq-pub tcp://127.0.0.1:18083 --disable-dns-checkpoints --enable-dns-blocklist`, I have this error `Exception in main! Failed to initialize p2p server.` 

Can you guide me to overcome this issue?

```
$ ps -ef | grep monerod
user     23885    2330  3 06:18 ?        00:23:45 ~/monero-gui-v0.17.3.1/monerod --detach --check-updates disabled --non-interactive --max-concurrency 16
user     49949   49942  0 16:43 pts/2    00:00:00 grep --color=auto monerod

$ ./monerod --zmq-pub tcp://127.0.0.1:18083 --disable-dns-checkpoints --enable-dns-blocklist
2022-02-07 08:48:53.019	I Monero 'Oxygen Orion' (v0.17.3.0-release)
2022-02-07 08:48:53.019	I Initializing cryptonote protocol...
2022-02-07 08:48:53.019	I Cryptonote protocol initialized OK
2022-02-07 08:48:53.019	I Initializing core...
2022-02-07 08:48:53.020	I Loading blockchain from folder ~/.bitmonero/lmdb ...
2022-02-07 08:48:53.110	I Loading checkpoints
2022-02-07 08:48:53.110	I Core initialized OK
2022-02-07 08:48:53.110	I Initializing p2p server...
2022-02-07 08:48:53.118	F Error starting server: Failed to bind IPv4 (set to required)
2022-02-07 08:48:53.120	I Deinitializing core...
2022-02-07 08:48:53.148	I Stopping cryptonote protocol...
2022-02-07 08:48:53.148	I Cryptonote protocol stopped successfully
2022-02-07 08:48:53.148	E Exception in main! Failed to initialize p2p server.
```