C:\lua\lua\winapi\types.lua:9: module 'ffi' not found help please

[dexpci]

"I built and installed https://luajit.org/install.html Version2.1.0beta3, and the error has finally gone away."
THIS NOT SOLVED MY PROBLEM

C:\Lua\lua.exe: C:\lua\lua\winapi\types.lua:9: module 'ffi' not found:
no field package.preload['ffi']
no file 'C:\lua\lua\ffi.lua'
no file '.\ffi.lua'
no file 'C:\Lua\lua\ffi.lua'
no file 'C:\Lua\lua\ffi\init.lua'
no file 'C:\Lua\ffi.lua'
no file 'C:\Lua\ffi\init.lua'
no file 'C:\Lua\lua\ffi.luac'
no file '.\ffi.dll'
no file '.\ffi51.dll'
no file 'C:\Lua\ffi.dll'
no file 'C:\Lua\ffi51.dll'
no file 'C:\Lua\clibs\ffi.dll'
no file 'C:\Lua\clibs\ffi51.dll'
no file 'C:\Lua\loadall.dll'
no file 'C:\Lua\clibs\loadall.dll'
stack traceback:
[C]: in function 'require'
C:\lua\lua\winapi\types.lua:9: in main chunk
[C]: in function 'require'
C:\Lua\lua\winapi\init.lua:8: in main chunk
[C]: in function 'require'
d:\Files\Projects\Lua\test.lua:328: in main chunk
[C]: ?
PS D:\Files\Projects\Lua>****