[TDF] Refine and clarify message printed by the exception.
[TDF] Refine and clarify message printed by the exception.

karies/root,karies/root,root-mirror/root,root-mirror/root,root-mirror/root,karies/root,karies/root,root-mirror/root,karies/root,karies/root,olifre/root,root-mirror/root,olifre/root,karies/root,root-mirror/root,olifre/root,olifre/root,olifre/root,karies/root,karies/root,root-mirror/root,olifre/root,root-mirror/root,root-mirror/root,karies/root,olifre/root,karies/root,root-mirror/root,olifre/root,olifre/root,root-mirror/root,olifre/root,olifre/root