That sounds like you have one or more profile files that lack
include <tunables/global>
in their preamble/header.
Unfortunately apparmor_parser doesn't report which file has this
issue [1], therefore you'll need to check yourself with
grep -L tunables/global /etc/apparmor.d/*
Doesn't seem to be the case though, as the only output of that is
grep: /etc/apparmor.d/abi: Is a directory
/etc/apparmor.d/abi
grep: /etc/apparmor.d/abstractions: Is a directory
/etc/apparmor.d/abstractions
grep: /etc/apparmor.d/DEBIAN: Is a directory
/etc/apparmor.d/DEBIAN
grep: /etc/apparmor.d/disable: Is a directory
/etc/apparmor.d/disable
grep: /etc/apparmor.d/force-complain: Is a directory
/etc/apparmor.d/force-complain
grep: /etc/apparmor.d/libvirt: Is a directory
/etc/apparmor.d/libvirt
grep: /etc/apparmor.d/local: Is a directory
/etc/apparmor.d/local
grep: /etc/apparmor.d/tunables: Is a directory
/etc/apparmor.d/tunables
But If that means you want a list of files that to contain "PROC" but are missing
"tunables/global", I made a list with
grep -rl "PROC" . | grep -v "tunables/global"
From package apparmor: abstractions/apparmor_api/change_profile
abstractions/apparmor_api/examine abstractions/apparmor_api/find_mountpoint
abstractions/apparmor_api/introspect abstractions/ubuntu-browsers.d/java
abstractions/ubuntu-browsers.d/plugins-common abstractions/apache2-common
abstractions/bash abstractions/crypto abstractions/gio-open abstractions/gnome
abstractions/mesa abstractions/nss-systemd abstractions/opencl-nvidia
abstractions/opencl-pocl abstractions/postfix-common abstractions/samba-rpcd
abstractions/ubuntu-konsole abstractions/audio abstractions/base
abstractions/exo-open abstractions/kde-open5 abstractions/nameservice
abstractions/nvidia abstractions/snap_browsers abstractions/pasta lsb_release
nvidia_modprobe
evince: abstractions/evince usr.bin.evince
passt: abstractions/passt
libvirt-daemon-driver-lxc: abstractions/libvirt-lxc
libvirt-daemon-driver-qemu: abstractions/libvirt-qemu
isc-dhcp-client: sbin.dhclient
thunderbird: usr.bin.thunderbird
libreoffice-common: usr.lib.libreoffice.program.soffice.bin
ibus-hangul: usr.libexec.ibus-engine-hangul
cups-daemon: usr.sbin.cupsd
ntpsec/openntpd: usr.sbin.ntpd
libvirt-daemon: usr.sbin.libvirtd
libvirt-daemon-common: usr.lib.libvirt.virt-aa-helper