Sounds like not all ads in the received Ad Pod are loading and the SDK is throwing errors in trying to play it, even though they were being downloaded, as you mentioned. These are considered as
Non-Fatal Errors, which are errors that are caught by the SDK and are not severe enough to prevent further ads from playing. The SDK handles these type of errors through the
LOG Ad Event, which provides more information of the error on the
Ad Data. You can see the LOG Ad Event from the corresponding events that you provided.
Hope this clears up any confusion on your end.