Moto G5S Plus File Manager is not showing any items Moto G5S Plus File Manager is not showing any items.

I used another File Manager like ES Explorer.

I see all items but Moto G5S Plus File Manager is not showing any items.
This is most likely because it's permissions are not enabled and/or you do not have the storage areas checked. 

In Settings - Apps, press the 3 dot menu and select "Show System" then scroll down to File Manager and select it. Select Permissions and verify "Storage" is enabled.

In the File Manager app, swipe right to open the menu and make sure "Internal Storage" and "External Storage" are selected at the top of the page. 

If you have a lot of small (under 50k) pictures, they will not show up by default. In the app's Settings menu there is an option called "Hide small pictures" which you may need to turn off.