Unable to Save Result Data Code 500
We are using LearnDash and have H5P Multiple Choice questions embedded in various courses. There is now a pop-up error on each page with a H5P Quiz saying "Unable to save result data. Message: error. Code: 500" (see screenshot attached). Any engagement with the H5P MC question will lead to the same error. Pages with H5P Slideshow do not produce this error.
H5P version 1.15.0
WP version: 5.5.2
Browser: Google Chrome