We have a Revit model form one of our customer who failed to be converted to SVF by the APS Model Derivative API (model is uploaded to a temporary bucket, then SVF conversion is triggered and monitored by our web app).
The message received in case of failure was:
We have encountered some issues while preparing the file for viewing. Please contact support for assistance. Unrecoverable exit code from extractor: -1073741831
This error occurred twice last week amongst other successful attempts. But now, it seems all conversions are successful and can not reproduce the failure anymore (we were trying to get a test case for support).

Questions:
1- what is the meaning of “Unrecoverable exit code from extractor: -1073741831”?
2- should we expect this error to still occur in the future?

Thanks,
Stephane