About 2 weeks ago I started course on "Optimizing Apache Spark on Databricks" from official Databricks academy. It is heavily based on Spark UI simulator experiments that were available here: https://www.databricks.training/spark-ui-simulator and for me it was just great source.

Unfortunately, they were available, that's the issue - unexpectedly the page fails to load and it is hard to continue course without access to analyzed experiments.

Does anyone know what happened to this Spark UI Simulator?