Missing CONFIG_PROC_EVENTS

sudo pybootchartgui -f pdf
No path given, trying /var/log/bootchart.tgz
parsing '/var/log/bootchart.tgz'
parsing 'header'
parsing 'cmdline2.log'
parsing 'paternity.log'
parsing 'proc_cpuinfo.log'
parsing 'proc_diskstats.log'
parsing 'proc_meminfo.log'
parsing 'proc_stat.log'
parsing 'taskstats.log'
Missing CONFIG_PROC_EVENTS: no parent for pid '1001' ('systemd') with ppid '0'
merged 0 logger processes
pruned 106 process, 0 exploders, 0 threads, and 0 runs
bootchart written to 'bootchart.png'