[Geoserver-users] NPE: Argument "bgColor" should not be null

GeoServer GeoServer User
1

I'm getting lots of log messages with the subject's error message.
here's a partial stack trace from viewing a layer group with about 30
geotiffs

version 2.8.1
org.geotools.resources.image.ColorUtilities.findColorINdex :506
org.geotools.render.lite.gridcoverage2d.GridCoverageRenderer.renderImage:822

Layer previews work for each individual geotiff, but the layer group
fails to render (just a white box where the map should be). Not sure
if the two are related or not.

I also see
org.geoserver.platform.ServiceException: Rendering process failed
org.geoserver.wms.map.RenderedImageMapOutputFormat

2

Hit enter too soon....last part of the trace

.produceMap :569

On Wed, Jan 13, 2016 at 12:59 PM, Alex O'Ree <spyhunter99@anonymised.com> wrote:

I'm getting lots of log messages with the subject's error message.
here's a partial stack trace from viewing a layer group with about 30
geotiffs

version 2.8.1
org.geotools.resources.image.ColorUtilities.findColorINdex :506
org.geotools.render.lite.gridcoverage2d.GridCoverageRenderer.renderImage:822

Layer previews work for each individual geotiff, but the layer group
fails to render (just a white box where the map should be). Not sure
if the two are related or not.

I also see
org.geoserver.platform.ServiceException: Rendering process failed
org.geoserver.wms.map.RenderedImageMapOutputFormat

3

This solved the problem for. I used the mosaic plugin and set the
background color

http://gis.stackexchange.com/questions/167647/geoserver-layer-groups-with-raster-layer

On Wed, Jan 13, 2016 at 1:00 PM, Alex O'Ree <spyhunter99@anonymised.com> wrote:

Hit enter too soon....last part of the trace

.produceMap :569

On Wed, Jan 13, 2016 at 12:59 PM, Alex O'Ree <spyhunter99@anonymised.com> wrote:

I'm getting lots of log messages with the subject's error message.
here's a partial stack trace from viewing a layer group with about 30
geotiffs

version 2.8.1
org.geotools.resources.image.ColorUtilities.findColorINdex :506
org.geotools.render.lite.gridcoverage2d.GridCoverageRenderer.renderImage:822

Layer previews work for each individual geotiff, but the layer group
fails to render (just a white box where the map should be). Not sure
if the two are related or not.

I also see
org.geoserver.platform.ServiceException: Rendering process failed
org.geoserver.wms.map.RenderedImageMapOutputFormat