Expected behavior and actual behavior.

A warning free restart.

Oct 30 00:00:01 box.lan apachectl[27096]: [Wed Oct 30 00:00:01.608252 2019] [alias:warn] [pid 27100] AH00671: The Alias directive in /etc/apache2/sites-enabled/010-iiab.conf at line 273 will probably never match because it overlaps an earlier Alias.
Oct 30 00:00:01 box.lan apachectl[27096]: [Wed Oct 30 00:00:01.609414 2019] [alias:warn] [pid 27100] AH00671: The ScriptAlias directive in /etc/apache2/sites-enabled/010-iiab.conf at line 297 will probably never match because it overlaps an earlier ScriptAlias.
Oct 30 00:00:01 box.lan apachectl[27096]: [Wed Oct 30 00:00:01.610011 2019] [alias:warn] [pid 27100] AH00671: The ScriptAlias directive in /etc/apache2/sites-enabled/awstats.conf at line 43 will probably never match because it overlaps an earlier ScriptAlias.
Oct 30 00:00:01 box.lan apachectl[27096]: [Wed Oct 30 00:00:01.610547 2019] [alias:warn] [pid 27100] AH00671: The Alias directive in /etc/apache2/sites-enabled/munin24.conf at line 1 will probably never match because it overlaps an earlier Alias.
Oct 30 00:00:01 box.lan apachectl[27096]: [Wed Oct 30 00:00:01.610828 2019] [alias:warn] [pid 27100] AH00671: The ScriptAlias directive in /etc/apache2/sites-enabled/munin24.conf at line 9 will probably never match because it overlaps an earlier ScriptAlias.
Oct 30 00:00:01 box.lan apachectl[27096]: [Wed Oct 30 00:00:01.611197 2019] [alias:warn] [pid 27100] AH00671: The Alias directive in /etc/apache2/sites-enabled/osm.conf at line 2 will probably never match because it overlaps an earlier Alias.
Oct 30 00:00:01 box.lan systemd[1]: Reloaded The Apache HTTP Server.

Steps to reproduce the problem.

restart apache2

Specifications like the version of the IIAB, operating system version, or hardware details.

general I would think.