How to connect design code untility for visual studio it shows error?

Summary:

I have downloaded dcu from env and also try grab all the files from env but it gives error for connection orcale environment?

Content (required):

I have try with this command butit gives error

 dcu.cmd -n https://lsbx23c1dev-admin.occa.ocs.oraclecloud.com -ujhdfds -p jsdksadckn -g

An unexpected error occurred when accessing https://lsbx23c1dev-admin.occa.ocs.oraclecloud.com/ccadminui/v1/login/.

HTTP Status Code: 400

Error Code : undefined

Message : undefined

An unexpected error occurred when accessing https://lsbx23c1dev-admin.occa.ocs.oraclecloud.com/ccadminui/v1/locales?withAliases=true.

HTTP Status Code: 401

Error Code : 00001000

Message : The user is not authenticated.