Hi Arjen,

Dec 14 15:31:54 starkey.platypusnet.org server[23062]: Caused by:
java.lang.NoSuchMethodException:
com.netscape.cmscore.apps.CMSEngine.<init>()
Dec 14 15:31:54 starkey.platypusnet.org server[23062]:         at
java.lang.Class.getConstructor0(Class.java:3082)
Dec 14 15:31:54 starkey.platypusnet.org server[23062]:         at
java.lang.Class.newInstance(Class.java:412)

This is a hint that there might be mismatched package versions.  Are
all Java / Tomcat packages at the latest version?

Fraser,

Thanks for your answer. All packages are at the latest (fedora supplied) version, see below. The original results were with Java 1.8.0 (openjdk), thus this morning I tried 1.9.0, 10, 11 with the same result.

[x@starkey ~]$ rpm -qa | grep tomcat
tomcat-lib-8.5.32-1.fc28.noarch
tomcat-el-3.0-api-8.5.32-1.fc28.noarch
tomcat-jsp-2.3-api-8.5.32-1.fc28.noarch
tomcat-servlet-3.1-api-8.5.32-1.fc28.noarch
tomcat-8.5.32-1.fc28.noarch
tomcatjss-7.3.6-1.fc28.noarch

[x@starkey ~]$ rpm -qa | grep pki
pki-kra-10.6.8-3.fc28.noarch
pki-symkey-10.6.8-3.fc28.x86_64
pki-ca-10.6.8-3.fc28.noarch
pki-base-java-10.6.8-3.fc28.noarch
krb5-pkinit-1.16.1-21.fc28.x86_64
pki-tools-10.6.8-3.fc28.x86_64
dogtag-pki-server-theme-10.6.8-3.fc28.noarch
python3-pki-10.6.8-3.fc28.noarch
python2-pki-10.6.8-3.fc28.noarch
pki-base-10.6.8-3.fc28.noarch
pki-server-10.6.8-3.fc28.noarch

[x@starkey ~]$ rpm -qa | grep java
javassist-3.18.1-8.fc28.noarch
tzdata-java-2018g-1.fc28.noarch
pki-base-java-10.6.8-3.fc28.noarch
java-1.8.0-openjdk-headless-1.8.0.191.b12-11.fc28.x86_64
python3-javapackages-5.0.0-14.fc28.noarch
javapackages-tools-5.0.0-14.fc28.noarch
nuxwdog-client-java-1.0.5-3.fc28.x86_64

Cheers,
Fraser