Submitting test scores from Lectora in Plateau LMS

We've sent content created using Lectora to a company using the Plateau LMS. The content runs fine but errors occur when one clicks Submit to obtain the test score. Here are a few errors that they've sent us:

LMSSetValueError: to [Question)1)19407_1259085981068]Not implemented error

LMSSetValue Error: cmi.interactions.NaN.result to {correct}Not implemented error

Any suggestions?