Error: There is already an image reader in terrain correction

Dear all
Several times I have faced with this problem, and I don’t know what is the reason:

java.lang.IllegalStateException: There is already an image reader.
at org.esa.snap.dataio.geotiff.GeoTiffProductReader.readProductNodesImpl(
at org.esa.snap.core.dataio.AbstractProductReader.readProductNodes(
at org.esa.snap.core.dataop.dem.ElevationFile.getLocalFile(
at org.esa.snap.core.dataop.dem.ElevationFile.getFile(
at org.esa.snap.core.dataop.dem.ElevationFile.getTile(
at org.esa.snap.core.dataop.dem.BaseElevationModel.getSamples(
at org.esa.snap.core.dataop.resamp.BilinearInterpolationResampling.resample(
at org.esa.snap.core.dataop.dem.BaseElevationModel.getElevation(
at org.esa.snap.dem.dataio.DEMFactory.getLocalDEM(
at org.esa.s1tbx.sar.gpf.geometric.RangeDopplerGeocodingOp.computeTileStack(
Caused: org.esa.snap.core.gpf.OperatorException: There is already an image reader.
at org.esa.snap.engine_utilities.gpf.OperatorUtils.catchOperatorException(
at org.esa.s1tbx.sar.gpf.geometric.RangeDopplerGeocodingOp.computeTileStack(
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeRect(
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeTile(
Caused: org.esa.snap.core.gpf.OperatorException: There is already an image reader.
at org.esa.snap.core.gpf.internal.OperatorExecutor$GPFImagingListener.errorOccurred(
at Source)
at Source)
at Source)
at Source)
at com.bc.ceres.glevel.MultiLevelImage.getData(
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(
at org.esa.snap.core.gpf.internal.OperatorImage.computeRect(
at Source)
at Source)
at Source)
at Source)
[catch] at Source)

Please guide me as soon as possible. Thanks.

No answer? terrain correction becomes nightmare in my project. I have tested all possibilities such as auto downloading of DEM as well as many external them.
Please reach to this problem as soon as possible

Dear @nooschinpilot
Could you provide us with more information about your SNAP version, OS version, processing steps and the product you are using?

@djagula can you have a look at this?


Dear Diana
I use the last version. I am using S1 GRDH but all of my steps stop in terrain correction.
I use two S1 for flood assessment

What the hell is this? :neutral_face: :face_with_raised_eyebrow:

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It is impossible to debug anything without having a copy of your processing graphs and information about the input data you used plus error logs.

Dear Mengdahl

The example of error message are mentioned above.
What can I share more?!

See my earlier message.

what a nice help!

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I have the same problem. Have you solved it