LTI and Moodle

We'd love help from the community to get this issue resolved. Thanks to anyone who can provide any tips.

Looking at developer tools we see this come up, right after submission/grading.

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Request URL: https://______.voicethread.com/api/rest/gradebook/22870530
Request Method: PATCH
Status Code: 500 Internal Server Error
Remote Address: 3.222.26.73:443
Referrer Policy: strict-origin-when-cross-origin
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