Looks like the same error in ubuntu 20.04:
Jun 5 00:00:07 cmdesk01 kernel: [4025941.209572] audit: type=1400 audit(1591304407.264:388): apparmor="DENIED" operation="capable" profile="/usr/sbin/cups-browsed" pid=1792223 comm="cups-browsed" capability=23 capname="sys_nice"
Looks like the same error in ubuntu 20.04:
Jun 5 00:00:07 cmdesk01 kernel: [4025941.209572] audit: type=1400 audit(159130440 7.264:388) : apparmor="DENIED" operation="capable" profile= "/usr/sbin/ cups-browsed" pid=1792223 comm="cups-browsed" capability=23 capname="sys_nice"