So, I am not sure which version started this problem with backing up
PostgreSQL.
| psql stderr: ERROR: function pg_start_backup(unknown) does not exist
| psql stderr: LINE 1: SELECT pg_start_backup('amanda-1703142252')
| psql stderr: ^
| psql stderr: HINT: No function matches the given name and argument types.
You might need to add explicit type casts.
??! Failed to call pg_start_backup
I believe the only change needs to be pg_backup_start instead of
pg_start_backup. The same change in order for pg_backup_stop. See table
9.92 at https://www.postgresql.org/docs/current/functions-admin.html
