E2019 Object type required (Delphi)
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This error is given whenever an object type is expected by the compiler. For instance, the ancestor type of an object must also be an object type.
type MyObject = object(TObject) end; begin end.
Confusingly enough, TObject in the unit System has a class type, so we cannot derive an object type from it.
program Solve; type MyObject = class (*Actually, this means: class(TObject)*) end; begin end.
Make sure the type identifier really stands for an object type - maybe it is misspelled, or maybe is hidden by an identifier from another unit.