During Zabbix setup (fresh instance) and daily usage (with some DB/Vault changes) it's possible to get errors like: "Vault connection failed or Database connection failed" (for example, DBA changed MD5 to SCRUM auth method for PgSQL or self-signed CA changed to access Vault):

Such (not)"detailed" error message is a nightmare in terms of support and maintenance, especially when you need to fetch credentials from vault and use encryption for database connection with certs, a lot of places to check, adjust and no helpful info what happened.

Please add all the error details to the output like here ( test_connection (1).diff ):