[QGIS-Developer] Python error when browsing virtual layers in DB Manager

[SIGéal]

Hi,

There is a bug in QGIS 3.4 which prevents from browsing virtual layers 
in DB Manager.

Changing line 196 in \QGIS 
3.4\apps\qgis\python\plugins\db_manager\db_plugins\vlayers\connectors.py 
from :

for _, l in QgsProject.instance().mapLayers():

to (what it was in QGIS 3.2) :

for _, l in list(QgsProject.instance().mapLayers().items()):

seems to solve the problem.

Tested on W7 and W10.

--
Christophe Damour



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