[Freeswitch-users] Invalid SAY Interface [en]

Hello, The voicmail and IVR prompts in my system are not saying out the numbers. The rest of the playback is happening correctly. In the log I'm getting the following error for the digits:

...

[ERR] switch_ivr_play_say.c:287 Invalid SAY Interface [en]!

The prompt that I here is something like this: "The person at extension is not available" and "Press to play the recording, press to listen to the recording. " The files are there in the digits folder, and the voicemail is getting saved correctly. Please help me fix this. Gautam