Some Error Messages Keep Appearing in Samba Log on Linux

printing/pcap.c:pcap_cache_reload(178)
Unable to open printcap file /etc/printcap for read!

printing/print_cups.c:cups_connect(103)
Unable to connect to CUPS server localhost:631 - Connection refused

solution:

load printers = no
printcap name = /dev/null
printing = bsd


lib/util_sock.c:get_peer_addr_internal(1676)
getpeername failed. Error was Transport endpoint is not connected

solution:

smb ports = 139