SSH Error when adding private hex repo

Questions & Help Questions
1 
mix hex.repo add oban https://getoban.pro/repo \
        --fetch-public-key SHA256:4/REDACTED/BIMLnK8NHcx/EWs+aIWPc \
        --auth-key REDACTED
        
** (UndefinedFunctionError) function :public_key.ssh_hostkey_fingerprint/2 is undefined or private, use ssh:hostkey_fingerprint/2 instead
    (public_key 1.15.1) :public_key.ssh_hostkey_fingerprint(:sha256, {:RSAPublicKey, REDACTED, 65537})
    (hex 2.0.6) lib/mix/tasks/hex.repo.ex:211: Mix.Tasks.Hex.Repo.show_public_key/1
    (hex 2.0.6) lib/mix/tasks/hex.repo.ex:222: Mix.Tasks.Hex.Repo.fetch_public_key/3
    (hex 2.0.6) lib/mix/tasks/hex.repo.ex:124: Mix.Tasks.Hex.Repo.add/3
    (mix 1.14.0) lib/mix/task.ex:421: anonymous fn/3 in Mix.Task.run_task/4
    (mix 1.14.0) lib/mix/cli.ex:84: Mix.CLI.run_task/2

Ubuntu Server 24.04
{:oban_web, "~> 2.10.3", repo: "oban"},
{:oban_pro, "~> 1.4.2", repo: "oban"},
{:oban, "~> 2.17.7"},
Erlang/OTP 26 [erts-14.2.5] [source] [64-bit] [smp:2:2] [ds:2:2:10] [async-threads:1] [jit:ns]
Elixir 1.14.0 (compiled with Erlang/OTP 24)