Colons / ERC-721

[davidmacfadyen]

When trying to run this line within the ERC-721 ReadME tests/exercises:

peer chaincode invoke $TARGET_TLS_OPTIONS -C mychannel -n token_erc721 -c '{"function":"MintWithTokenURI","Args":["101", "https://example.com/nft101.json"]}'

-- I get a lengthy response beginning
Error: error getting broadcast client: orderer client failed to connect to localhost:7050...

And ending
...fabric-samples/test-network/organizations/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt: too many colons in address"

How might the peer chaincode invoke command be rephrased to avoid the "colonic mess"? How could additional bracketing [] fix this issue?