Error in Model Builder and Batch Processing

Hello,

I’m running SNAP 7.0 with all updates installed on Ubuntu 18.04.3 LTS

Today I tried to process (apply orbit file, calibration, terrain flattening, terain correction) some S1 GRDH scenes using batch processing with a graph I created in the model builder.

As soon as I specify the input file in the model builder, I get the error message: Error: For input string “null”

The same happens, when I first load the scenes, which I would like to process, in the batch processing tool and select the graph. Then I get the error message: Error: For input string “null”

I tried zipped and unzipped input files. No difference.

I have no idea, what this error message means and how to deal with it.

Any help would be highly appreciated.

Best regards,
Carsten

Do you mind sharing the xml graph file so we can try to reproduce the error?