I encountered the exact same error when I first try to start my MSF (Amazon Managed Flink) job in Java.
And how I resolve it is through setting up the Runtime properties in the MSF application.

The following link below contains an example of how to setup a input source kinesis stream and a sink kinesis stream.

https://github.com/aws-samples/amazon-managed-service-for-apache-flink-examples/tree/main/java/KinesisConnectors

Hopefully this helps!