QGIS 3.40 and Dataplotty 4.3.1 : python error on layout

[palight]

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

[ghtmtt]

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

[soaubier]

Yes, I'll take it @ghtmtt !

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

[pigreco]

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

[pigreco]

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)

[palight]

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

[pigreco]

@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.

test_dataplotly.zip

[ghtmtt]

fixed by #385