Oh Problem again

Why there are always failed when itcomes to following the tutorial, is there any problem with the software that Iam using? It failes when I am converting Server Core to Full Installation or with Gui, my syntax was right because it loads, then after 60% it failed
Comments
Import -Server Module
You have to make sure that you type that command before you convert it.
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2019 Goals: [ICND1][ICDN2]-CCNA
Ensure you have imported the servermanager module, server 2012 ideally should automatically import it though you may not (for some odd reason) have it installed. Also if still an issue post the terminal text you have.
This may be the solution:
Coretech Blog » Blog Archive » Why I can’t convert my Windows Server 2012 R2 Core to GUI
I had a similar issue and decided to re-install the OS with full GUI (I thought it would be quicker) and I think I'd install GUI by default in future.
MCSE Cloud Platform and Infrastructure, MCSA Windows Server 2012, MCSA SQL Server 2012/2014, MCSA Windows 10, MCITP Server Admin, Security+, Virtualization with Windows Server Hyper-V and System Center Specialist