QGIS keeps crashing (unresponsive) for a particular project

[Oisin-JK]

What is the bug or the crash?

I have a project containing various geopackage layers and virtual layers. QGIS repeatedly becomes unresponsive. I'm nmot certain, but it seems ot happen when saving the project, or committing edits to a layer - I'm mostly editing a single point layer, which has a non-spatial child relation.

I get no error messages. Log files in C:\Users\xxxx\AppData\Local\Temp are empty. I've tried creating a log using Mattheus Kuhn's script from here: https://gis.stackexchange.com/questions/84790/where-does-qgis-write-its-error-log-messages. But no log file is produced.

Steps to reproduce the issue

Project specific. I'm unable to share the project as its commercially sensitive.

Versions

QGIS version 3.34.9-Prizren (and 3.38.1-Grenoble) QGIS code revision cbbc7bdf Qt version 5.15.13 Python version 3.12.4 GDAL/OGR version 3.9.1 PROJ version 9.4.0 EPSG Registry database version v11.004 (2024-02-24) GEOS version 3.12.2-CAPI-1.18.2 SQLite version 3.45.1 PDAL version 2.6.3 PostgreSQL client version 16.2 SpatiaLite version 5.1.0 QWT version 6.2.0 QScintilla2 version 2.14.1 OS version Windows 10 Version 2009

Supported QGIS version

• [X] I'm running a supported QGIS version according to the roadmap.

New profile

• [X] I tried with a new QGIS profile

Additional context

How am I able to trace the cause of the crash?

[agiudiceandrea]

@Oisin-JK, thanks for reporting. As correctly stated at https://gis.stackexchange.com/a/148353 (see also https://qgis.org/pyqgis/master/core/QgsLogger.html), QGIS outputs debug messages only if it is a debug build. On Windows, debug builds can be installed using the OSGeo4W Network installer or using a weekly snapshot standalone installer.

Without a reproducible example it is quite difficult for the developers to find the root cause of the issue and fix it.

Have you actually tried if the issue occurs also using a new QGIS user profile?

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