@han1 the suggestion from the information you've provided is that indexing a document with a nested mapping is crashing the application. This cannot be replicated locally or running against Elastic Cloud as @Martijn_Laarman showed, and does not show up in the integration tests either. What Martijn is highlighting is that the information provided is insufficient to understand where the problem is, hence we are asking for more information and a small example that reproduces the problem.
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