The command has indeed failed with message:
The field t is missing in Top.M.
The command has indeed failed with message:
Unable to unify "nat" with "True".
The command has indeed failed with message:
In nested Ltac calls to "f" and "apply x", last call failed.
Unable to unify "nat" with "True".
The command has indeed failed with message:
Ltac call to "instantiate ( (ident) := (lglob) )" failed.
Error: Instance is not well-typed in the environment of ?x.
