Lots of files NM_Blank_Page downloaded

Hi everyone !

Sometimes when I create a grid with a form (to edit data in a table) when I return to the grid from the form (pressing the “return” button) I have a lot of files downloaded with a name “NM_Blank_Page(1), (2), etc”

I don’t know what I’m doing to generate this.

Can someone help me with this ?
Thanks a lot !