Cannot build Unreal Engine 4 from source in Linux.

Overview: I have been trying to build Linux from source the last months and all I had were errors and others.

Why would I want to get UE4.27 on Linux?There are no pre-compiled already build to, make UE4.27 projects on Linux all you get is unreal engine 5 pre-compiled builds, and so I need to build from source, sorry ask what I mean because I am not sure on what I mean with pre-compiled builds…

issue so I cannot compiled no more while I was able in other times…

When I hit the ./GenerateProjectFiles.sh it pops me out this error

error CS0006: Metadata file System.dll' could not be found error CS0006: Metadata file System.Core.dll’ could not be found
ERROR: Unable to compile source files.

On the terminal so how am I supposed to build it? Are you guys abandoning UE4 for Linux or what is going?

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Other details: Using debian based linux OS, Setup.sh works just fine… The machine is good enough to build it.