Invalid extension 'D', but no rule 'i' or 'e' in context 'TestMenu'报这个问题dialplan进不了Playback，如何解决？

Question

Oooh, got something to jump out with ('D')!
Invalid extension 'D', but no rule 'i' or 'e' in context 'TestMenu'
报这个问题dialplan进不了Playback，求解，谢谢