[Qgis-user] QGIS 3.4.12 python error on open plugins list manager

Fri Sep 27 04:41:47 PDT 2019

Hi,

The bad news is you just discovered a regression in QGIS 3.4.11 - it's now 
unexpectedly dependent on Qt 5.6 (what is probably not available in your 
Ubuntu).

The good news is there is a quick workaround. You can either rollback to 
3.4.10 or edit your 3.4.11 to disable that improvement (probably insignificant 
for you, as it only concerns private repositories with redirections) and bring 
back compatibility with Qt < 5.6. Just edit the file:

/usr/share/qgis/python/pyplugin_installer/installer_data.py

and comment out line 325:

#        self.mRepositories[key]
["QRequest"].setAttribute(QNetworkRequest.FollowRedirectsAttribute, True)

It should help now :)

Regards,
Borys

Dnia piątek, 27 września 2019 12:56:18 CEST Walter Lorenzetti pisze:
> I try to clear QGIS3.ini file form custom settings and clear python
> profile folder, but Now I otain this:
> 
> Si è verificato un errore durante l'esecuzione delle istruzioni
> seguenti: pyplugin_installer.instance().showPluginManagerWhenReady()
> 
> Traceback (most recent call last):   File "", line 1, in   File
> "/usr/share/qgis/python/pyplugin_installer/installer.py", line 252, in
> showPluginManagerWhenReady    
> self.fetchAvailablePlugins(reloadMode=False)   File
> "/usr/share/qgis/python/pyplugin_installer/installer.py", line 120, in
> fetchAvailablePlugins     repositories.requestFetching(key)   File
> "/usr/share/qgis/python/pyplugin_installer/installer_data.py", line 325,
> in requestFetching    
> self.mRepositories[key]["QRequest"].setAttribute(QNetworkRequest.FollowRedir
> ectsAttribute, True) AttributeError: type object 'QNetworkRequest' has no
> attribute 'FollowRedirectsAttribute'
> 
> Versione Python: 3.5.2 (default, Jul 10 2019, 11:58:48) [GCC 5.4.0 20160609]
> 
> I tried to create a new profile but same error.
> 
> I'll try to reinstall qgis
> 
> W
> 
> Il 27/09/19 11:02, Borys Jurgiel ha scritto:
> > The debug output doesn't want to help, indeed...
> > 
> > Could you try to start a new fresh user profile? It would eliminate two
> > possible causes: all the user settings (especially the QGIS3.ini file) and
> > all user-installed Python stuff from
> > ~/.local/share/QGIS/QGIS3/profiles/default/python
> > 
> > Borys
> > 
> > Dnia piątek, 27 września 2019 09:10:42 CEST Walter Lorenzetti pisze:
> >> Hi Borys,
> >> 
> >> it's strange because Python Console working normally, also current
> >> plugins installed.
> >> 
> >> I haven't many installed plugins, only DBManager and Quickmpaservices..
> >> 
> >> Running QGIS by shell, on bootstrap I obtain this:
> >> 
> >> Warning: void DBusMenuExporterPrivate::addAction(QAction*, int): Already
> >> tracking action "Search QMS" under id 288
> >> Warning: QVariantMap DBusMenuExporterDBus::getProperties(int, const
> >> QStringList&) const: Condition failed: action
> >> Warning: QVariantMap DBusMenuExporterDBus::getProperties(int, const
> >> QStringList&) const: Condition failed: action
> >> Warning: QVariantMap DBusMenuExporterDBus::getProperties(int, const
> >> QStringList&) const: Condition failed: action
> >> Warning: QVariantMap DBusMenuExporterDBus::getProperties(int, const
> >> QStringList&) const: Condition failed: action
> >> Warning: QVariantMap DBusMenuExporterDBus::getProperties(int, const
> >> QStringList&) const: Condition failed: action
> >> Warning: QVariantMap DBusMenuExporterDBus::getProperties(int, const
> >> QStringList&) const: Condition failed: action
> >> Warning: QVariantMap DBusMenuExporterDBus::getProperties(int, const
> >> QStringList&) const: Condition failed: action
> >> Warning: QVariantMap DBusMenuExporterDBus::getProperties(int, const
> >> QStringList&) const: Condition failed: action
> >> Warning: QVariantMap DBusMenuExporterDBus::getProperties(int, const
> >> QStringList&) const: Condition failed: action
> >> Warning: QVariantMap DBusMenuExporterDBus::getProperties(int, const
> >> QStringList&) const: Condition failed: action
> >> Warning: QVariantMap DBusMenuExporterDBus::getProperties(int, const
> >> QStringList&) const: Condition failed: action
> >> Warning: QVariantMap DBusMenuExporterDBus::getProperties(int, const
> >> QStringList&) const: Condition failed: action
> >> Warning: QVariantMap DBusMenuExporterDBus::getProperties(int, const
> >> QStringList&) const: Condition failed: action
> >> Warning: QVariantMap DBusMenuExporterDBus::getProperties(int, const
> >> QStringList&) const: Condition failed: action
> >> Warning: QVariantMap DBusMenuExporterDBus::getProperties(int, const
> >> QStringList&) const: Condition failed: action
> >> Warning: QVariantMap DBusMenuExporterDBus::getProperties(int, const
> >> QStringList&) const: Condition failed: action
> >> 
> >> and on opening plugins manager window this:
> >> 
> >> "<font color=\"red\">Si è verificato un errore durante l'esecuzione
> >> delle istruzioni
> >> seguenti:<br><tt>pyplugin_installer.instance().showPluginManagerWhenReady
> >> ()< /tt></font><br><pre><br>traceback.print_exception()
> >> failed<br></pre>Versione Python:<br><br><br>Versione di
> >> QGIS:<br>3.4.12-Madeira 'Madeira', 625767347a<br><br>Percorso
> >> Python:<br>"
> >> 
> >> W
> >> 
> >> Il 26/09/19 19:59, Borys Jurgiel ha scritto:
> >>> Not really, except something wrong happens in Python.
> >>> 
> >>> The plugin manager window is C++ itself, however, when you click to open
> >>> it, it calls that Python function from your first error message to fetch
> >>> Python plugins from the repository. When the plugin list is ready,
> >>> Python
> >>> calls back the C++ API to open the window.
> >>> 
> >>> Apparently something bad happens in Python when it tries to fetch new
> >>> plugins. Are Python plugins generally work for you (hopefully you had
> >>> some enabled, at least Processing or DB Manager)? Does the
> >>> Plugins->Python console seem to work? Another idea is maybe running QGIS
> >>> from the command line would give some debug messages.
> >>> 
> >>> Borys
> >>> 
> >>> Dnia czwartek, 26 września 2019 15:46:12 CEST Walter Lorenzetti pisze:
> >>>> Hi list,
> >>>> 
> >>>> I'm on QGIS 3.4.12 on Ubuntu desktop, today on opening the list plugins
> >>>> window manager, I obtain the seguent error:
> >>>> 
> >>>> pyplugin_installer.instance().showPluginManagerWhenReady()
> >>>> 
> >>>> traceback.print_exception() failed
> >>>> 
> >>>> Any idea about it?
> >>>> 
> >>>> Thanks in adavance.
> >>>> 
> >>>> W
> >>> 
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