App_swfit Failed to set voice

I am getting error message in the asterisk CLI, we are using cepstral voice for a text to speech call .

The calls rings and play the message but skips the swift voice.
here is the error log

ERROR[5362]: app_swift.c:272 swift_exec: Failed to set voice: Voice not present or corrupted
– Executing [s@send-ATD-D:6] Swift(“SIP/bandwidth.com_outbound-00835450”, “David-8kHz^Doe”) in new stack
[Sep 19 12:13:26] ERROR[5362]: app_swift.c:272 swift_exec: Failed to set voice: Voice not present or corrupted

Please help me as I may loose my job

It is very frustrating :open_mouth: