I checked in the previous discussions, looks like no one else is seeing this issue. looks like MacBook is able to find the Time Machine share after I created it and the drive and it starts backing up but after about a min or so it disconnects. after checking through the logs I found this below. not sure why it keeps on disconnecting it
TrueNAS-13.0-U5.3
Intel(R) Core(TM) i7 CPU X 980 @ 3.33GHz
TrueNAS-13.0-U5.3
Intel(R) Core(TM) i7 CPU X 980 @ 3.33GHz