"SPOOL directory /var/tmp/heyu does not exist" running under apache2

[TomHenderson4]

Just upgraded to Ubuntu 18.04, and am having a curious problem. Heyu works perfectly from the command line, but commands issued by a process running under apache2 get this error:

SPOOL directory /var/tmp/heyu does not exist

I found some instructions regarding setting PrivateTmp=false for apache2, but that did not fix the error. Any one run across this problem and have a hint for me?

Currently running heyu 2.9.4

[TomHenderson4]

FYI the fix to this was at https://bbs.archlinux.org/viewtopic.php?id=150663

Removing PrivateTmp= from the apache service file will fix this.
Relevant bug: https://bugs.archlinux.org/task/31914

Service file was /lib/systemd/system/apache2.service