Because of https://github.com/saltstack/salt/issues/48556 SaltStack crushes when it is started on Python 3.7 Fix: update saltstack to 2018.3.3
*** Bug 231339 has been marked as a duplicate of this bug. ***
Patch for this issue (hopefully) here: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231609.
*** This bug has been marked as a duplicate of bug 231609 ***