Newb (me) trying to get a SecretsProvider via ParamManager; catching a NPE with "region must not be null"

[rburcham]

It's clear I do not know the best practice for configuring my java powertools lambda, specifically how to tell powertools in which region it will operate.

private SecretsProvider secretsProvider = ParamManager.getSecretsProvider();

is ultimately throwing

Caused by: java.lang.NullPointerException: region must not be null.
        at software.amazon.awssdk.utils.Validate.paramNotBlank(Validate.java:177)
        at software.amazon.awssdk.regions.Region.of(Region.java:153)
        at software.amazon.awssdk.regions.Region.of(Region.java:149)
        at software.amazon.lambda.powertools.parameters.SecretsProvider$Builder.createClient(SecretsProvider.java:163)
        at software.amazon.lambda.powertools.parameters.SecretsProvider$Builder.access$0(SecretsProvider.java:160)
        at software.amazon.lambda.powertools.parameters.SecretsProvider.<init>(SecretsProvider.java:83)
        ... 41 more

How does one prime the ParamManger with what it needs?

This is during sam build, wherein mvn is firing junit tests.