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

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at org.apache.commons.httpclient.auth.NTLM.hashPassword(
at org.apache.commons.httpclient.auth.NTLM.getType3Message(
at org.apache.commons.httpclient.auth.NTLMScheme.authenticate(
at org.apache.commons.httpclient.HttpMethodDirector.authenticateProxy(
at org.apache.commons.httpclient.HttpMethodDirector.authenticate(
at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(
at org.apache.commons.httpclient.HttpClient.executeMethod(

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