Creating a time series ImageMosaic that writes to a PostGIS table fails on geoserver versions > 18.104.22.168 with the attached logs and following error:
WARN [gce.imagemosaic] - Unable to close indexingnull
Note that the table appears valid in postgis, but the sample_image and layername.properties is not created in the data directory.
Sample data is attached that will reproduce the problem after creating the appropriate postgres user / password:
auscover / dCKZbaL_