Hi everyone, has anyone here experience this kind of issue. I have a small assembly, when i click on this assembly in the preview it shows that there are components in that assembly. but when I open the assembly it is blank. even in the design manager there are no parts inside the assembly. When I try opening the file using the large design review the parts are shown and can be open individually. but in the reference tab there are no parts inside.

This the first time I encountered this and I was wondering what is wrong why I cant see my parts inside my assembly. Hope you can help me on this.

I attached the components and a powerpoint for you guys to check. Thanks in advance