How do fix the error "could not be compiled. Try rebuilding from the source manually"

*Info for the people who don’t know how to rebuild (have never done it before):
You need Visual Studio Community (not Code). After its installation you will most likely run into the next error, which seems to be common with UE5:

A fatal error occurred. The required library hostfxr.dll could not be found.

If so, continue following this info to install the right version of .NET Core:

After that you should be able to rebuild just fine in VS.

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