WAR tomcat deployment failed to start

[enjoywithme]

05-May-2019 22:43:45.777 SEVERE [localhost-startStop-1] org.apache.catalina.core.StandardContext.filterStart Exception starting filter requestContextFilter
java.lang.NullPointerException
at com.sismics.util.filter.RequestContextFilter.init(RequestContextFilter.java:54)
at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:285)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:266)
at org.apache.catalina.core.ApplicationFilterConfig.(ApplicationFilterConfig.java:108)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4708)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5348)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:753)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:729)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:974)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1850)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)

It seems failed to get baseDataDirectory . I created /var/reader manually and changed permission to 777.
I also tried adding lines below to config.properties:
os.name=unix
reader.home=/var/reader
But no success.

[jendib]

Maybe it's a systemd issue like sismics/docs#316
See ReadWritePaths here: https://www.freedesktop.org/software/systemd/man/systemd.exec.html