DB Manager python error on missing GPKG datasource

[gioman]

In DB Manager if you have GPKG connection and the datasource is missing a python error is returned:

RuntimeError: /home/giovanni/Desktop/sven_outputs/sven_geodata.gpkg: No such file or directory 
Traceback (most recent call last):
  File "/usr/share/qgis/python/plugins/db_manager/db_model.py", line 444, in rowCount
    self._refreshIndex(parent, True)
  File "/usr/share/qgis/python/plugins/db_manager/db_model.py", line 493, in _refreshIndex
    if item.populate():
  File "/usr/share/qgis/python/plugins/db_manager/db_model.py", line 170, in populate
    if not connection.connect():
  File "/usr/share/qgis/python/plugins/db_manager/db_plugins/gpkg/plugin.py", line 78, in connect
    return self.connectToUri(uri)
  File "/usr/share/qgis/python/plugins/db_manager/db_plugins/plugin.py", line 115, in connectToUri
    self.db = self.databasesFactory(self, uri)
  File "/usr/share/qgis/python/plugins/db_manager/db_plugins/gpkg/plugin.py", line 64, in databasesFactory
    return GPKGDatabase(connection, uri)
  File "/usr/share/qgis/python/plugins/db_manager/db_plugins/gpkg/plugin.py", line 108, in __init__
    Database.__init__(self, connection, uri)
  File "/usr/share/qgis/python/plugins/db_manager/db_plugins/plugin.py", line 224, in __init__
    self.connector = self.connectorsFactory(uri)
  File "/usr/share/qgis/python/plugins/db_manager/db_plugins/gpkg/plugin.py", line 111, in connectorsFactory
    return GPKGDBConnector(uri)
  File "/usr/share/qgis/python/plugins/db_manager/db_plugins/gpkg/connector.py", line 53, in __init__
    self._opendb()
  File "/usr/share/qgis/python/plugins/db_manager/db_plugins/gpkg/connector.py", line 60, in _opendb
    self.gdal_ds = gdal.OpenEx(self.dbname, gdal.OF_UPDATE)
  File "/usr/lib/python3/dist-packages/osgeo/gdal.py", line 3014, in OpenEx
    return _gdal.OpenEx(*args, **kwargs)
RuntimeError: /home/giovanni/Desktop/sven_outputs/sven_geodata.gpkg: No such file or directory

On the other hand if a Spatialite datasource is missing a much nicer message is returned.

QGIS 3.8.2 on Ubuntu.

[gioman]

It does not happen on 3.4, so regression.

[elpaso]

I cannot reproduce on current master.
I created a GPKG, created the connection in the browser and renamed the file.
When I open DB manager and expand the tree to show the connections content, I get an (expected) error dialog and no stacktrace:

What is the correct procedure to reproduce?

[gioman]

I cannot reproduce on current master.

I will check master too.

[gioman]

By the way, thanks for looking into this.

[gioman]

Still seeing on master:

[elpaso]

Sorry, tested again on master and I cannot reproduce.

[gioman]

Sorry, tested again on master and I cannot reproduce.

I will try again on a different pc.

[gioman]

Sorry, tested again on master and I cannot reproduce.

it does not happen on my Windows testing VM, so it is likely a local issue.