a virtual layer make the project empty

[qgib]

Author Name: Lee Han (Lee Han)
Original Redmine Issue: 18018
Affected QGIS version: 2.18.16
Redmine category:virtual_layers

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It is not the first time I encounter this issue.(It is been around a lot by the way.)
My qgis project has some postgis and shapefile layers plus a virtual_layer.
Open the project : it is empty, nothing in the list or in the canevas
Edit the .qgs, remove the ... concerning the virtual_layer.
open again the .qgs and the project is ok.

Sometimes I can work with many virtual layers during days or weeks and suddenly, I don't know the reason why, the project may become empty.
I have tested this with different computers, same behaviour. This has been going on since virtual layers were added (to my knowledge).
Copy of project attached.

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• plan_virtual_layer.qgs (Lee Han)

[qgib]

Author Name: Enrico Fiore (Enrico Fiore)

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I have noticed the same issue in QGIS 2.18.17.
If there is one or more virtual layers that refers to layers that are been renamed or removed, QGIS project will be loaded empty.

[qgib]

Author Name: Regis Haubourg (@haubourg)

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Could you provide a sample project file with data that allows to reproduce the issue. It tried to reproduce with no success here. (This is the hardest part in fixing such issues, making the condition reproducible for itself, and then for others).

Did you try QGIS 3.x to test future 3.4 LTR ?

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• resolution was changed from to not reproducable
• priority_id was changed from High to Normal
• status_id was changed from Open to Feedback

[qgib]

Author Name: Lee Han (Lee Han)

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I don't have any project file with the "bug" for now. If it happens, I will join it.
I am working with QGis 3.4 now. We'll see.

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• status_id was changed from Feedback to Closed