error at the end of SAGA logs

[qgib]

Author Name: Giovanni Manghi (@gioman)
Original Redmine Issue: 21530
Affected QGIS version: 3.6.0
Redmine category:processing/saga

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On 3.6 at the end of logs of SAGA tools (tested a few tools for rasters/dems) a message like the following will show

Loading resulting layers
The following layers were not correctly generated.

• C:/Users/qgis/AppData/Local/Temp/processing_78672142d2a448ee80c46f3c600901c9/0f148c064e624b7e815a936a301e85a3/C_GENE.sdat
• C:/Users/qgis/AppData/Local/Temp/processing_78672142d2a448ee80c46f3c600901c9/65c98a4ab4f047c99b8ddec8093d9d84/SLOPE.sdat
• C:/Users/qgis/AppData/Local/Temp/processing_78672142d2a448ee80c46f3c600901c9/f36ee388fb4340c181b64c2e56f0e081/ASPECT.sdat

You can check the 'Log Messages Panel' in QGIS main window to find more information about the execution of the algorithm.

the outputs are created and added to the map, but anyway this seems wrong (and does not happen on 3.4.5).

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Related issue(s): #29339 (relates)
Redmine related issue(s): 21523

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[qgib]

Author Name: Alexander Bruy (@alexbruy)

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• relates was configured as QGis 3.6 Saga, every raster function fail #29339

[AlisterH]

the outputs are created and added to the map...

Hi, in 3.8.1 there are still issues with saga outputs. e.g. if I run a Laplacian filter or a gaussian filter the outputs are created but not loaded, and there is an error message:

C:\Users\alistair\Documents>exit
Execution completed in 6.76 seconds
Results:
{'RESULT': 'C:/Users/alistair/AppData/Local/Temp/processing_0599d00836ee49a99269fe789f082afd/1ba0853d9b164950985e975cf53ced54/RESULT.sdat'}

Loading resulting layers
The following layers were not correctly generated.<ul><li>C:/Users/alistair/AppData/Local/Temp/processing_0599d00836ee49a99269fe789f082afd/9273c3e69e5e404aaad9c793d7755dea/RESULT.sdat</li></ul>You can check the 'Log Messages Panel' in QGIS main window to find more information about the execution of the algorithm.

Notice how the file path in the error message is different to the file path in the line starting "{'RESULT':". QGIS isn't trying to load the right file!

Should I consider this the current form of this issue, or file another ticket?

[AlisterH]

Hi, in 3.8.1 there are still issues with saga outputs. e.g. if I run a Laplacian filter or a gaussian filter the outputs are created but not loaded, and there is an error message:

If I use the saga raster calculator it seems the outputs aren't created (or perhaps are deleted?).

[gioman]

If I use the saga raster calculator it seems the outputs aren't created (or perhaps are deleted?).

I can't confirm here on master/ubuntu, but still it spits the error at the end of the log.

[AlisterH]

For the record, I am on Windows 10.

[gioman]

For the record, I am on Windows 10.

for me still works on Windows 10: no error at the end of the log in latest 3.4, error at the end of the log in latest 3.8. Still the output is calculated and added in both cases.

[AlisterH]

Still the output is calculated and added in both cases.

OK, testing both Laplassian filter and raster calculator again today it is the same as for you - it works fine but there is the spurious error.
I have no idea what was different last time that might have been causing a problem.

[gioman]

but there is the spurious error.

this has also surfaced in other tools, for example, warp by GDAL and only if a temp output is created.

[natearoe]

I am receiving the same error using QGIS 3.10.7 and 3.14 and have posted about it on GIS Stack Exchange. https://gis.stackexchange.com/questions/366138/do-saga-tools-work-on-qgis-3-10-7

Can you please confirm that the values created from QGIS SAGA tools are accurate despite the error message?

[gioman]

Can you please confirm that the values created from QGIS SAGA tools are accurate despite the error message?

@natearoe the error message at the end os the SAGA tools run is annoying but seems innocuous.

[GiulliBaggio]

Hello, I'm having the same error, but after that I don't have eny resolution, its like the operation is aborted. Specially using the Saga tools.

[Sud04]

Same error : The following layers were not correctly generated.

• C:/Sudhanshu Drive/Narmada/DEM/st.sdat

You can check the 'Log Messages Panel' in QGIS main window to find more information about the execution of the algorithm.
Please provide solution. QGIS 3.1 version

[nyalldawson]

This was fixed by 286fd20