QGIS crashes with "Open Existing Model..." from processing toolbox or "Edit Model..." from QGIS browser

[pathmapper]

Describe the bug QGIS crashes with Open Existing Model... from processing toolbox or Edit Model... from QGIS browser.

How to Reproduce

1. Open the following model from the processing toolbox with Open Existing Model... or open the contextmenu of the model in QGIS browser and choose Edit Model... : QGIS_model_crash.zip

2. See error --> QGIS crashes

QGIS and OS versions

QGIS version	3.16.1-Hannover	QGIS code revision	b381a90dca
Compiled against Qt	5.11.3	Running against Qt	5.11.3
Compiled against GDAL/OGR	2.4.0	Running against GDAL/OGR	2.4.0
Compiled against GEOS	3.7.1-CAPI-1.11.1	Running against GEOS	3.7.1-CAPI-1.11.1 27a5e771
Compiled against SQLite	3.27.2	Running against SQLite	3.27.2
PostgreSQL Client Version	11.9 (Debian 11.9-0+deb10u1)	SpatiaLite Version	4.3.0a
QWT Version	6.1.4	QScintilla2 Version	2.10.4
Compiled against PROJ	5.2.0	Running against PROJ	Rel. 5.2.0, September 15th, 2018
OS Version	Debian GNU/Linux 10 (buster)
Active python plugins	ClipMultipleLayers; quick_map_services; scriptrunner3; LAStools; canvas_clipper; savedialog; loadthemall; clipper; kmltools; qgis-maptiler-plugin; MapsPrinter; Discovery; mmqgis; pluginbuilder3; vector_tiles_reader; layerGroupFilter; plugin_reloader; realcentroid; mask; MetaSearch; db_manager; processing

Additional context

• The model was created using the QGIS model builder and QGIS crashed when the model was run from the model builder.
• From QGIS browser the model could be run.

[gioman]

@pathmapper no crash here on 3.16.1 on Ubuntu 20.04 and Windows 10. Please try with a new QGIS profile.

[pathmapper]

@gioman thanks, don't know what happened but it's not crashing anymore (with the same profile).