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java.lang.IndexOutOfBoundsException: Index: 0	at java.util.Collections$EmptyList.get(Collections.java:3212)	at org.opensaml.xml.util.LazyList.get(LazyList.java:90)	at org.opensaml.xml.util.XMLObjectChildrenList.get(XMLObjectChildrenList.java:97)	at org.opensaml.xml.util.XMLObjectChildrenList.get(XMLObjectChildrenList.java:33)	at com.alfaariss.oa.authentication.remote.saml2.profile.AbstractAuthNMethodSAML2Profile.getAttributeMap(AbstractAuthNMethodSAML2Profile.java:485)	at com.alfaariss.oa.authentication.remote.saml2.profile.sso.WebBrowserSSOProfile.handleResponse(WebBrowserSSOProfile.java:743)	at com.alfaariss.oa.authentication.remote.saml2.profile.sso.WebBrowserSSOProfile.process(WebBrowserSSOProfile.java:190)	at com.alfaariss.oa.authentication.remote.saml2.SAML2AuthenticationMethod.authenticate(SAML2AuthenticationMethod.java:339)	at com.alfaariss.oa.sso.authentication.web.AuthenticationManager.authenticate(AuthenticationManager.java:146)	at com.alfaariss.oa.sso.web.profile.web.WebProfile.handleAuthentication(WebProfile.java:1245)	at com.alfaariss.oa.sso.web.profile.web.WebProfile.service(WebProfile.java:442)	at com.alfaariss.oa.sso.web.WebSSOServlet.service(WebSSOServlet.java:238)