Bug/127 payload check

[wsmithpnnl]

I've intercepted invalid result->scarab param via the try block, but need a sample invalid result to make sure that I can add appropriate unit tests (handling a general Exception in the current PR.)

Fixes

• Add try handler to routines identified in #127

Testing

• Will drop in appropriate unit test once we identify some "known good/ bad" inputs

Prior to merging for releases:

• [ ] update the project's version in the top-level CMakeLists.txt file
• [ ] update the appVersion to be the new container image tag version in chart/Chart.yaml

[laroque]

I think an example was numpy.inf, maybe also numpy arrays, though those may be converted to a param_array and just round-trip to a list

[wsmithpnnl]

This all looks good. I'm approving this, but it should be tested as @laroque suggested before merging.

Thanks for the review, I'll try to get an appropriate unit test in to check those test cases before merging.