Editing KML with PyQGIS fails

[Mazur93]

What is the bug or the crash?

Updating an existing kml feature fails. On commitChanges() there is only an error message which is not very helpful 'Layer edges_kml : OGR error setting feature 1178:'. The same script works if the underlying layer is a geojson.
SampleScriptAndData.zip

Steps to reproduce the issue

1. Load both layers from the sample data folder
2. Open the python console
3. Open the sample script
4. Run the script with the json file -> Success
5. Run the same script with the kml file -> OGR errors

Versions

<style type="text/css"> p, li { white-space: pre-wrap; } </style>

QGIS version	3.14.15-Pi	QGIS code revision	d5114d2
Compiled against Qt	5.11.2	Running against Qt	5.11.2
Compiled against GDAL/OGR	3.0.4	Running against GDAL/OGR	3.0.4
Compiled against GEOS	3.8.1-CAPI-1.13.3	Running against GEOS	3.8.1-CAPI-1.13.3
Compiled against SQLite	3.29.0	Running against SQLite	3.29.0
PostgreSQL Client Version	11.5	SpatiaLite Version	4.3.0
QWT Version	6.1.3	QScintilla2 Version	2.10.8
Compiled against PROJ	6.3.2	Running against PROJ	Rel. 6.3.2, May 1st, 2020
OS Version	Windows 10 (10.0)
Active python plugins	coordinate_capture; coordinator; QuickWKT; quick_map_services; db_manager; MetaSearch; processing

Additional context

No response

[gioman]

Can OGR update KMLs?

[Mazur93]

Hello Giovanni, I guess yes as it wa fixed here #39087 Best wishes, Bartek Am Mi., 4. Aug. 2021 um 17:17 Uhr schrieb Giovanni Manghi < ***@***.***>:

…

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[nicogodet]

3.14.15-Pi

Try on latest version.

I can't reproduce on 3.20.1

[nicogodet]

No OGR error but it does nothing...
Still NULL values

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[github-actions]

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