Failed to write frame

i have a problem in Asterisk voicemail module, when hang the call asterisk gives:

-- <SIP/100-00000001> Playing 'vm-advopts' (language 'fr') [Oct 14 14:33:46] WARNING[11503]: file.c:768 ast_readaudio_callback: Failed to write frame

then asterisk goes down
please help

If “goes down” means “crashes” and you are using a supported version (at least 1.8.x.x), follow the procedures in … +Backtrace