I do Run->Edit Configurations and deploy my web application to Tomcat in IDEA. It works perfectly for my GET and POST.
When I take the resulting WAR file and drop it into a "real" systemd Tomcat service, it deploys, but GETting from it or POSTing to it produce nothing but 404.
What should I look for in trying to solve this problem?
IntelliJ IDEA Ultimate 2018.1.4
Oracle JDK 1.8.0-144