i used cello to install fabric network (2 org , 2 peers per each organization, 1 ca) then we followed the tutorial but we have only one ca instead of ca per org and when we run command
composer network start -c PeerAdmin@byfn-network-org1 -a firstname.lastname@example.org -o endorsementPolicyFile=endorsement-policy.json -A alice -C alice/admin-pub.pem -A bob -C bob/admin-pub.pem
we get this error
✖ Starting business network definition. This may take a minute...
Error: Error trying to instantiate composer runtime. Error: Error: SERVICE_UNAVAILABLE