Currently, I’m trying to set up a quorum private network using this link. I have followed all the setup and run 5 nodes as well. but when I run geth attach data/geth.ipc inside a node 0 and try to get net.peerCount the output is 0 instead of 4. Can anyone guide me here on what I did wrong? 

Geth version: 1.11.6-stable

Command used for node 0 :

geth --datadir data 
--networkid 1337 --nodiscover --verbosity 5 
--syncmode full 
--mine --miner.threads 1 --miner.gasprice 0 
--http --http.addr 127.0.0.1 --http.port 22000 --http.corsdomain "*" --http.vhosts "*" 
--ws --ws.addr 127.0.0.1 --ws.port 32000 --ws.origins "*" 
--http.api admin,eth,debug,miner,net,txpool,personal,web3 
--ws.api admin,eth,debug,miner,net,txpool,personal,web3 
--unlock ${ADDRESS} --allow-insecure-unlock --password ./data/keystore/accountPassword 
--port 30300 --miner.etherbase 0xd4eBe35Ef9857F44f44c6dEB73766B033E903D85

Command used for **node 1 ** :

geth --datadir data 
    --networkid 1337 --nodiscover --verbosity 5 
    --syncmode full 
    --mine --miner.threads 1 --miner.gasprice 0 
    --http --http.addr 127.0.0.1 --http.port 22001 --http.corsdomain "*" --http.vhosts "*" 
    --ws --ws.addr 127.0.0.1 --ws.port 32001 --ws.origins "*" 
    --http.api admin,eth,debug,miner,net,txpool,personal,web3 
    --ws.api admin,eth,debug,miner,net,txpool,personal,web3 
    --unlock ${ADDRESS} --allow-insecure-unlock --password ./data/keystore/accountPassword 
    --port 30301 --miner.etherbase 0xd4eBe35Ef9857F44f44c6dEB73766B033E903D85 --authrpc.port 8552

And likewise for nodes 2,3 & 4 only the Ip and port are different.
Also, every node block number is different; they are not in sync mode 1 is on 116 and the second is on 78.