Fatal: Error starting Ethereum: listen udp :30303:

[snovamo86861]

(base) sandranomo@x86_64-apple-darwin13 tools % ./geth --networkid 1991 --datadir node1 -rpc --unlock "0x088E24a0157947922C88a072C75607FbF130E9e8" --password node1/password.txt --allow-insecure-unlock --mine --minerthreads 1
INFO [01-18|22:25:41.867] Maximum peer count ETH=50 LES=0 total=50
INFO [01-18|22:25:41.892] Starting peer-to-peer node instance=Geth/v1.9.7-stable-a718daa6/darwin-amd64/go1.13.4
INFO [01-18|22:25:41.892] Allocated trie memory caches clean=256.00MiB dirty=256.00MiB
INFO [01-18|22:25:41.893] Allocated cache and file handles database=/Users/sandranomo/Desktop/tools/node1/geth/chaindata cache=512.00MiB handles=5120
INFO [01-18|22:25:42.015] Opened ancient database database=/Users/sandranomo/Desktop/tools/node1/geth/chaindata/ancient
INFO [01-18|22:25:42.021] Initialised chain configuration config="{ChainID: 1 Homestead: 1150000 DAO: 1920000 DAOSupport: true EIP150: 2463000 EIP155: 2675000 EIP158: 2675000 Byzantium: 4370000 Constantinople: 7280000 Petersburg: 7280000 Istanbul: 9069000 Engine: ethash}"
INFO [01-18|22:25:42.021] Disk storage enabled for ethash caches dir=/Users/sandranomo/Desktop/tools/node1/geth/ethash count=3
INFO [01-18|22:25:42.022] Disk storage enabled for ethash DAGs dir=/Users/sandranomo/Library/Ethash count=2
INFO [01-18|22:25:42.023] Initialising Ethereum protocol versions="[64 63]" network=1991 dbversion=7
INFO [01-18|22:25:42.128] Loaded most recent local header number=0 hash=d4e567…cb8fa3 td=17179869184 age=50y9mo1w
INFO [01-18|22:25:42.128] Loaded most recent local full block number=0 hash=d4e567…cb8fa3 td=17179869184 age=50y9mo1w
INFO [01-18|22:25:42.129] Loaded most recent local fast block number=0 hash=d4e567…cb8fa3 td=17179869184 age=50y9mo1w
INFO [01-18|22:25:42.131] Loaded local transaction journal transactions=0 dropped=0
INFO [01-18|22:25:42.132] Regenerated local transaction journal transactions=0 accounts=0
INFO [01-18|22:25:42.141] Allocated fast sync bloom size=512.00MiB
Fatal: Error starting protocol stack: listen udp [::]:30303: bind: address already in use

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