java.lang.NullPointerException: This exception has no message.

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via GitHub by danilovesky
, 1 year ago
This exception has no message.
via Stack Overflow by Steve Lukis
, 11 months ago
This exception has no message.
via Spring JIRA by U. Kkm, 1 year ago
This exception has no message.
via Spring JIRA by U. Kkm, 2 years ago
This exception has no message.
via GitHub by brackxm
, 2 years ago
This exception has no message.
via Spring JIRA by Brad L Vandermoon, 1 year ago
This exception has no message.
java.lang.NullPointerException	at java.util.Collections$UnmodifiableCollection.<init>(Collections.java:1026)	at java.util.Collections$UnmodifiableSet.<init>(Collections.java:1128)	at java.util.Collections.unmodifiableSet(Collections.java:1118)	at org.workcraft.dom.NodeContextTracker.getPostset(NodeContextTracker.java:144)	at org.workcraft.dom.AbstractModel.getPostset(AbstractModel.java:139)	at org.workcraft.plugins.circuit.routing.RouterClient.registerObstacles(RouterClient.java:83)	at org.workcraft.plugins.circuit.VisualCircuit.draw(VisualCircuit.java:392)