Import Content not working

I’m trying to overtake a dashboard problem exporting and importing again the data into a brand new installation but after selecting the pages and clicking on the import button, this is what happens:

The export happens without any issues, also the package upload. The page show the content of the package, to select the pages and import options, but after clicking the button, nothing else happens and the page repeats inside the section where the content was.

I’m using the docker version 15.0.