Where would you look to diagnose a failed Presto query that returned an ambiguous error message in watsonx.data?

Presto engine logs contain detailed error traces; stack traces; and query execution details; in watsonx.data on IBM Cloud; these logs are streamed to IBM Log Analysis for centralized search and analysis. The incorrect options ("The IBM Cloud Object Storage access log for the data bucket", "The Hive Metastore changelog files stored in the catalog bucket", "The Apache Spark History Server since Presto delegates execution to Spark") are distractors that don't fully capture the concept described.