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QGIS 3.40 and Dataplotty 4.3.1 : python error on layout #379

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QGIS 3.40 and Dataplotty 4.3.1 : python error on layout#379
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bug

Description

@palight
palight
opened on Jul 9, 2025

Describe

I have a project with a report wich contains several plots (bar, histogram, scatter, but no radar plot). Since update from 4.2.0 to 4.3.1, when I open the report I got a python error about radar plot (that I don't use)

KeyError: 'y_combo_radar_label' 
Traceback (most recent call last):
  File "C:\Users/xxx/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\DataPlotly\layouts\plot_layout_item.py", line 157, in draw
    self.load_content()
  File "C:\Users/xxx/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\DataPlotly\layouts\plot_layout_item.py", line 223, in load_content
    self.web_page.mainFrame().setHtml(self.create_plot(), base_url)
                                      ^^^^^^^^^^^^^^^^^^
  File "C:\Users/xxx/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\DataPlotly\layouts\plot_layout_item.py", line 189, in create_plot
    plot_factory = PlotFactory(self.plot_settings[0], self, polygon_filter=polygon_filter)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users/xxx/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\DataPlotly\core\plot_factory.py", line 117, in __init__
    self.rebuild()
  File "C:\Users/xxx/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\DataPlotly\core\plot_factory.py", line 477, in rebuild
    self.fetch_values_from_layer()
  File "C:\Users/xxx/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\DataPlotly\core\plot_factory.py", line 167, in fetch_values_from_layer
    self.settings.properties[
KeyError: 'y_combo_radar_label'

Reproduce
Steps to reproduce the behavior:

  1. Open project with report containing plots
  2. Then open the report and see the pyhton error and Qgis closing

Screenshots

none, error seems enough

Desktop (please complete the following information):

  • OS: Windows 11
  • QGIS release 3.40.6
  • DataPlotly 4.3.1

Activity

  1. palight
    added
    bug
    on Jul 9, 2025

  2. ghtmtt commented on Jul 9, 2025

    @ghtmtt
    ghtmtt
    on Jul 9, 2025
    Owner

    @soaubier can you please have a look at this? Thanks!

  3. soaubier commented on Jul 15, 2025

    @soaubier
    soaubier
    on Jul 15, 2025
    Contributor

    Yes, I'll take it @ghtmtt !

    @palight can you give me a test project, please? It will be easier to check. Thanks !

  4. pigreco commented on Aug 22, 2025

    @pigreco
    pigreco
    on Aug 22, 2025

    I confirm, I get the same message.

    KeyError: 'y_combo_radar_label' 
Traceback (most recent call last):
  File "C:\Users/s.fiandaca/AppData/Roaming/QGIS/QGIS3\profiles\Corso_DTA/python/plugins\DataPlotly\layouts\plot_layout_item.py", line 157, in draw
    self.load_content()
  File "C:\Users/s.fiandaca/AppData/Roaming/QGIS/QGIS3\profiles\Corso_DTA/python/plugins\DataPlotly\layouts\plot_layout_item.py", line 223, in load_content
    self.web_page.mainFrame().setHtml(self.create_plot(), base_url)
                                      ^^^^^^^^^^^^^^^^^^
  File "C:\Users/s.fiandaca/AppData/Roaming/QGIS/QGIS3\profiles\Corso_DTA/python/plugins\DataPlotly\layouts\plot_layout_item.py", line 181, in create_plot
    plot_factory = PlotFactory(self.plot_settings[0], self, polygon_filter=polygon_filter)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users/s.fiandaca/AppData/Roaming/QGIS/QGIS3\profiles\Corso_DTA/python/plugins\DataPlotly\core\plot_factory.py", line 117, in __init__
    self.rebuild()
  File "C:\Users/s.fiandaca/AppData/Roaming/QGIS/QGIS3\profiles\Corso_DTA/python/plugins\DataPlotly\core\plot_factory.py", line 477, in rebuild
    self.fetch_values_from_layer()
  File "C:\Users/s.fiandaca/AppData/Roaming/QGIS/QGIS3\profiles\Corso_DTA/python/plugins\DataPlotly\core\plot_factory.py", line 167, in fetch_values_from_layer
    self.settings.properties[
KeyError: 'y_combo_radar_label'


Versione Python: 3.12.10 (main, Apr  9 2025, 08:14:47) [MSC v.1943 64 bit (AMD64)] 
Versione di QGIS: 3.40.5-Bratislava Bratislava, 8d6d1b5448 

Percorso Python:
C:\Users/s.fiandaca/AppData/Roaming/QGIS/QGIS3\profiles\Corso_DTA/python/plugins\TocTable-main
C:/OSGeo4W/apps/qgis-ltr/./python
C:/Users/s.fiandaca/AppData/Roaming/QGIS/QGIS3\profiles\Corso_DTA/python
C:/Users/s.fiandaca/AppData/Roaming/QGIS/QGIS3\profiles\Corso_DTA/python/plugins
C:/OSGeo4W/apps/qgis-ltr/./python/plugins
C:\OSGeo4W\bin\python312.zip
C:\OSGeo4W\apps\Python312\DLLs
C:\OSGeo4W\apps\Python312\Lib
C:\OSGeo4W\bin
C:\OSGeo4W\apps\Python312
C:\OSGeo4W\apps\Python312\Lib\site-packages
C:/Users/s.fiandaca/AppData/Roaming/QGIS/QGIS3\profiles\Corso_DTA/python
D:/P21G1466-34-v1_CUSRAS25k_analisi_cambiamenti/CUSRAS25k_13_16_19_22

  5. pigreco commented on Aug 22, 2025

    @pigreco
    pigreco
    on Aug 22, 2025

    I uninstalled the 4.3.1 plugin and installed version 4.2.0 and I still get the same error!

    oops, after restarting QGIS it works!! (DataPlotly 4.2.0)

  6. palight commented on Aug 25, 2025

    @palight
    palight
    on Aug 25, 2025
    Author

    Hi Pigreco,

    Can you prepare the test project ? My project is quite complex with mainly confidential data.

    Thanks for reporting th issue too.

    I confirm, I get the same message.

    KeyError: 'y_combo_radar_label' 
Traceback (most recent call last):
  File "C:\Users/s.fiandaca/AppData/Roaming/QGIS/QGIS3\profiles\Corso_DTA/python/plugins\DataPlotly\layouts\plot_layout_item.py", line 157, in draw
    self.load_content()
  File "C:\Users/s.fiandaca/AppData/Roaming/QGIS/QGIS3\profiles\Corso_DTA/python/plugins\DataPlotly\layouts\plot_layout_item.py", line 223, in load_content
    self.web_page.mainFrame().setHtml(self.create_plot(), base_url)
                                      ^^^^^^^^^^^^^^^^^^
  File "C:\Users/s.fiandaca/AppData/Roaming/QGIS/QGIS3\profiles\Corso_DTA/python/plugins\DataPlotly\layouts\plot_layout_item.py", line 181, in create_plot
    plot_factory = PlotFactory(self.plot_settings[0], self, polygon_filter=polygon_filter)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users/s.fiandaca/AppData/Roaming/QGIS/QGIS3\profiles\Corso_DTA/python/plugins\DataPlotly\core\plot_factory.py", line 117, in __init__
    self.rebuild()
  File "C:\Users/s.fiandaca/AppData/Roaming/QGIS/QGIS3\profiles\Corso_DTA/python/plugins\DataPlotly\core\plot_factory.py", line 477, in rebuild
    self.fetch_values_from_layer()
  File "C:\Users/s.fiandaca/AppData/Roaming/QGIS/QGIS3\profiles\Corso_DTA/python/plugins\DataPlotly\core\plot_factory.py", line 167, in fetch_values_from_layer
    self.settings.properties[
KeyError: 'y_combo_radar_label'


Versione Python: 3.12.10 (main, Apr  9 2025, 08:14:47) [MSC v.1943 64 bit (AMD64)] 
Versione di QGIS: 3.40.5-Bratislava Bratislava, 8d6d1b5448 

Percorso Python:
C:\Users/s.fiandaca/AppData/Roaming/QGIS/QGIS3\profiles\Corso_DTA/python/plugins\TocTable-main
C:/OSGeo4W/apps/qgis-ltr/./python
C:/Users/s.fiandaca/AppData/Roaming/QGIS/QGIS3\profiles\Corso_DTA/python
C:/Users/s.fiandaca/AppData/Roaming/QGIS/QGIS3\profiles\Corso_DTA/python/plugins
C:/OSGeo4W/apps/qgis-ltr/./python/plugins
C:\OSGeo4W\bin\python312.zip
C:\OSGeo4W\apps\Python312\DLLs
C:\OSGeo4W\apps\Python312\Lib
C:\OSGeo4W\bin
C:\OSGeo4W\apps\Python312
C:\OSGeo4W\apps\Python312\Lib\site-packages
C:/Users/s.fiandaca/AppData/Roaming/QGIS/QGIS3\profiles\Corso_DTA/python
D:/P21G1466-34-v1_CUSRAS25k_analisi_cambiamenti/CUSRAS25k_13_16_19_22
  7. palight
    changed the title [-]QGIS 3.40 and Dataplotty 4.3.1 : Long loading project and python error on layout[/-] [+]QGIS 3.40 and Dataplotty 4.3.1 : python error on layout[/+] on Aug 25, 2025

  8. pigreco commented on Aug 25, 2025

    @pigreco
    pigreco
    on Aug 25, 2025

    @soaubier , @palight , @ghtmtt
    I have attached a sample project created with QGIS 3.40 using the plugin DataPlotly 4.2.0.
    When I open the same project in QGIS 3.40 but with a different profile, where DataPlotly 4.3.1 is installed, the BarPlot diagram is no longer displayed in the print layout.

    The following error appears in the log:

    KeyError: 'y_combo_radar_label' 
Traceback (most recent call last):
  File "C:\Users/pigre/AppData/Roaming/QGIS/QGIS3\profiles\Corso_TESSPA/python/plugins\DataPlotly\layouts\plot_layout_item.py", line 157, in draw
    self.load_content()
  File "C:\Users/pigre/AppData/Roaming/QGIS/QGIS3\profiles\Corso_TESSPA/python/plugins\DataPlotly\layouts\plot_layout_item.py", line 223, in load_content
    self.web_page.mainFrame().setHtml(self.create_plot(), base_url)
                                      ^^^^^^^^^^^^^^^^^^
  File "C:\Users/pigre/AppData/Roaming/QGIS/QGIS3\profiles\Corso_TESSPA/python/plugins\DataPlotly\layouts\plot_layout_item.py", line 181, in create_plot
    plot_factory = PlotFactory(self.plot_settings[0], self, polygon_filter=polygon_filter)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users/pigre/AppData/Roaming/QGIS/QGIS3\profiles\Corso_TESSPA/python/plugins\DataPlotly\core\plot_factory.py", line 117, in __init__
    self.rebuild()
  File "C:\Users/pigre/AppData/Roaming/QGIS/QGIS3\profiles\Corso_TESSPA/python/plugins\DataPlotly\core\plot_factory.py", line 477, in rebuild
    self.fetch_values_from_layer()
  File "C:\Users/pigre/AppData/Roaming/QGIS/QGIS3\profiles\Corso_TESSPA/python/plugins\DataPlotly\core\plot_factory.py", line 167, in fetch_values_from_layer
    self.settings.properties[
KeyError: 'y_combo_radar_label'


Versione Python: 3.12.11 (main, Jun 17 2025, 13:41:12) [MSC v.1943 64 bit (AMD64)] 
Versione di QGIS: 3.40.10-Bratislava Bratislava, c98da2e682 

Percorso Python:
C:/OSGeo4W/apps/qgis-ltr/./python
C:/Users/pigre/AppData/Roaming/QGIS/QGIS3\profiles\Corso_TESSPA/python
C:/Users/pigre/AppData/Roaming/QGIS/QGIS3\profiles\Corso_TESSPA/python/plugins
C:/OSGeo4W/apps/qgis-ltr/./python/plugins
C:\OSGeo4W\bin\python312.zip
C:\OSGeo4W\apps\Python312\DLLs
C:\OSGeo4W\apps\Python312\Lib
C:\OSGeo4W\bin
C:\OSGeo4W\apps\Python312
C:\OSGeo4W\apps\Python312\Lib\site-packages
C:\OSGeo4W\apps\Python312\Lib\site-packages\win32
C:\OSGeo4W\apps\Python312\Lib\site-packages\win32\lib
C:\OSGeo4W\apps\Python312\Lib\site-packages\Pythonwin
C:/Users/pigre/AppData/Roaming/QGIS/QGIS3\profiles\Corso_TESSPA/python

    Steps to reproduce

    1. Open the attached project in QGIS 3.40 with DataPlotly 4.2.0 → the BarPlot diagram is correctly displayed in the layout.
    2. Open the same project in QGIS 3.40 with DataPlotly 4.3.1 → the BarPlot diagram is missing in the layout.

    Expected behavior
    The BarPlot diagram should be displayed correctly also when using DataPlotly 4.3.1.

    Image

    test_dataplotly.zip

  9. ghtmtt commented on Sep 24, 2025

    @ghtmtt
    ghtmtt
    on Sep 24, 2025
    Owner

    fixed by #385

  10. ghtmtt
    closed this as completedon Sep 24, 2025
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