After an upgrade on the AE to version to version 12.3.2, the Autoforecast does no longer run, it remains indefinitely in version status preparing.
WP log can contain the following message:
A forcedTracefile is also created automatically:
UDB: 0.00000 20200304/165219.894 - 32 Unhandled Exception in thread MQWorker-1 ID=32 20200304/165219.895 - 32 U00045014 Exception 'java.lang.NullPointerException: "null"' at 'com.automic.forecast.model.SimpleForecastable.proposeStartTime():245'. 20200304/165219.896 - 32 U00003620 Routine 'com.automic.kernel.impl.DefaultExceptionHandler' forces trace because of error.
This is a bug in the Autoforecast version 12.3.2 could get stuck in Status Preparing when there are tasks with earliest start time.
Automation Engine 12.3.2
This bug is corrected in version 12.3.2 HF2 of One Automation. Upgrade to this version or a higher one to fix this issue.