"Invalid block template received from daemon" when solo mining.
```
 * ABOUT        xmrig-proxy/6.15.1 gcc/11.2.0
 * LIBS         libuv/1.43.0 OpenSSL/3.0.2
 * MODE         nicehash
 * POOL #1      127.0.0.1:18081 coin Monero
 * POOL #2      pool.hashvault.pro:8888 algo auto
 * BIND #1      0.0.0.0:67346
 * BIND #2      [::]:67346
 * COMMANDS     hashrate, connections, verbose, workers
 * HTTP API     192.168.1.4:77346
[2022-08-14 16:54:27.629]  net      127.0.0.1:18081 job error: "Invalid block template received from daemon."
[2022-08-14 16:54:28.642]  net      127.0.0.1:18081 job error: "Invalid block template received from daemon."
```
In my config.json, the daemon is configured as:
```
        {
            "algo": null,
            "coin": "XMR",
            "url": "127.0.0.1:18081",
            "user": "4…",
            "pass": null,
            "rig-id": null,
            "keepalive": null,
            "enabled": true,
            "tls": null,
            "tls-fingerprint": null,
            "daemon": true,
	    "daemon-zmq-port": 18083
        }
```
monerod is configured as:
```
confirm-external-bind=1
data-dir=/var/lib/monero
log-file=/var/log/monero/monero.log
log-level=0
rpc-bind-ip=0.0.0.0
rpc-ssl-private-key=/etc/letsencrypt/live/example.com/privkey.pem
rpc-ssl-certificate=/etc/letsencrypt/live/example.com/fullchain.pem
zmq-pub=tcp://127.0.0.1:18083
```