[Freeswitch-users] Transfer after bridge has no read codec.

Hello, I am using Transfer After Bridge in Bypass media mode and when I transfer I am getting this error 2015-09-20 22:22:14.278228 [ERR] switch_core_io.c:187 sofia/internal/xxxx has no read codec. Does anyone know what this error means and how to correct it? I didn’t know codec was needed in bypass mode. I am transferring back to the dial plan. Thanks