Quad Beta Flight Used To Work Now Says"failed To Connect To Serial Port"

[Andrew Heitmann]

I have this (Racerstar StarF4S 30A Blheli_S Dshot 4 in 1 ESC AIO F4 OSD Flight Controller w/ BEC Current Sensor) and a FS-i6 transmitter and FS-iA6B receiver. I'm using PPM. The do I connect the signal wire to the SBUS tab on the FC?