error demo BarcodeReaderD12 DELPHI 12

[edugdr]

Hello,
It gives an error when I try to compile the example BarcodeReaderD12:

[dcc32 Error] FMX.Filter.pas(575): E2003 Undeclared identifier: 'SFilterAlreadyExists'
[dcc32 Fatal Error] FMX.Controls.pas(24): F2063 Could not compile used unit 'FMX.Filter.pas'

[DelphiWorlds]

I do not have those files included in Kastri; they are part of the Delphi source. It seems you may have older versions of those files in the compiler search path.