java.lang.NullPointerException

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    • java.lang.NullPointerException at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:768) at org.jasig.cas.client.proxy.ProxyGrantingTicketStorageImpl.retrieve(ProxyGrantingTicketStorageImpl.java:85) at org.jasig.cas.client.validation.Cas20ServiceTicketValidator.parseResponseFromServer(Cas20ServiceTicketValidator.java:92) at org.jasig.cas.client.validation.AbstractUrlBasedTicketValidator.validate(AbstractUrlBasedTicketValidator.java:217) at org.jasig.cas.client.validation.AbstractTicketValidationFilter.doFilter(AbstractTicketValidationFilter.java:165) at blackboard.auth.cas.web.CASLoginAction.getAssertionFromRequest(CASLoginAction.java:196) at blackboard.auth.cas.web.CASLoginAction.login(CASLoginAction.java:87) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

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