JOC Cockpit has a NPE while showing Job Streams

Current Situation

It may happen that a NPE is thrown while working with Job Streams in JOC Cockpit.

{{REQUEST: ./jobstreams/eventlist
{{ PARAMS:}}{{

{"jobschedulerId":"myId","jobStream":"myStream","limit":0}

}}USER: root
{{ 2020-02-13T11:58:09,181 ERROR qtp1020391880-78 c.s.j.c.JOCDefaultResponse - java.lang.NullPointerException}}
{{ java.lang.NullPointerException: null}}
{{ at com.sos.joc.jobstreams.impl.ConditionEventsImpl.getEvents(ConditionEventsImpl.java:75) [webservice-1.13.3.jar:1.13.3]}}
{{ }}}}

Desired Behavior

No NPE should be thrown.

Patch

A patch for JOC Cockpit is available here