So we recently switched from having our own ts-cv wrapped around mlforecast and now we switched to automl where we define the search space on our own. I can share all the code parts if needed, but maybe it is not needed. anyway, the error i got now twice (while running for approximately 8-12 times in weekly production runs) is the following:
terminate called after throwing an instance of 'OrderedStructs::SkipList::FailedComparison'
what(): std::exception