I was working with a lot of layers on a QGIS project. I saved it and when I opened the file it doesn't show any layers. The .qgis is not empty, weighing 1,7Kb (I have other with 500Kb working well) but when I open the project it only shows the names of groups I made to manage the layers on Panel Layer.
I have try to use older versions of the project and they dont work either.
How can i fix it?