It might interest you to know that, whenever the error 0x80070002 is prompted. It is one of the common error codes in Windows. This usually means that there are corrupt apps, outdated packages, and updates not superseded with new versions of Windows. This could mean that the needed files are missing despite downloading them from the right source. Here are some guides relating to WDS. BOOTP Vendor Extensions and DHCP Options. For more details on Automatic IP Assignment: Dynamic Host Configuration Protocol (DHCP), how to install Dynamic Host Configuration Protocol on Windows Server 2019, and how to configure Post-deployment of Dynamic Host Configuration Protocol.

This error was prompted when I tried mounting packages from an older operating system (Windows 10, version 1909) packages to the most recent version of windows (Windows 10 May 2020 Update) install.wim file via DISM. 
- This means we are not having all of the files that should have been transmitted when updating your install.wim files.

How to Resolve the Error

To resolve this issue, here is what you need to know. Download the right packages for the newer Operating systems you wish to mount packages to (Windows 10 May 2020 Update) in my case at the time of writing this guide.