Thanks for confirming.
This gave me an error:
ERRO Not compilable IDLProg.
This is because it uses a custom type called SnapshotValue but does not understand its type definition,
In this case, you must specify candid_file_path to specify the .did where the SnapshotValue is located.
If the id is the name of another component in the same project, the .did will be automatically retrieved and interpreted.