Unable to initialize the Servlet configuration when trying to configure the SAML_SSO module

Hi,

I implememented the SAML_SSO module.

When I start the application I get the following error:

java.lang.NullPointerException: null
    at saml20.implementation.common.Constants.getSP_URI(Constants.java:175)
    at saml20.implementation.common.SAMLUtil.getMetadataConfig(SAMLUtil.java:334)
    at saml20.implementation.SAMLRequestHandler.initServlet(SAMLRequestHandler.java:76)
    at saml20.implementation.SAMLRequestHandler.<init>(SAMLRequestHandler.java:63)
    at saml20.implementation.SAMLRequestHandler.getInstance(SAMLRequestHandler.java:55)
    at saml20.implementation.SSOServerConfiguration.start(SSOServerConfiguration.java:18)
    at saml20.actions.StartSSO.executeAction(StartSSO.java:27)
    at saml20.actions.StartSSO.executeAction(StartSSO.java:16)

I Can't find a constant named: "getSP_URI"

We configured the Startup flow in the configuration of the application.

We tried version 1.7 and v1.6.1

It is an on premise installation on a Windows server.

Thanks for your help.