With the new support for LDAP authentication to HashiCorp Vaults, the Snaplex node configuration file secrets-config.json requires a new key, auth_method, with a value approle or ldap. You must update each of your existing Snaplex node configuration files to include this key-value pair: "auth_method": "approle", as prescribed in the Step 1a-Approle,for the approle-based authentication to succeed.