QGIS: Problems due to vectoral layers in QGIS3.10 - shapefile

I have just set up the QGIS3.10, and now I can not see the vectorial layers. In fact the program says that they have no objects and I did not have this problem with the previous versions of the QGIS.
I will show you the problem in an image:
Anyone knows why this situation it is happening ?
thank you very much,
Marta

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