address ://etcd-adapter:12379: too many colons in address

[tinyshu]

ERROR: transport: Error while dialing dial tcp: address ://etcd-adapter:12379: too many colons in address""} why dashboard happend this erro?
`
conf:
listen:
host: 0.0.0.0
port: 9000

allow_embedding: true
allow_list: []

etcd:
endpoints:
- http://docker-apisix-etcd-1:2379
username: ""
password: ""

authentication:
secret: "aSuperSecretKey_ChangeThisToRandom"
expire_time: 3600
users:
- username: admin
password: 123456

deployment:
admin:
admin_api_url: http://docker-apisix-apisix-1:9180
admin_key:
- "123456"

plugins:

• key-auth
• basic-auth

`