Hi Amr,
The reason you see this message is because you have the "Firmware Auto Sync Server policy" set to "auto Acknowledge" or "User Acknowledge" (see screenshot below) and the default host firmware package policy has some empty values. To clear this fault you can fill out the empty values in the default host firmware policy or what I would recommend is to set the "Firmware Auto Sync Server policy" to "No Actions".
Let me know if this helps.