Unable to integrate the nifi 1.15.3 with Azure AD

I have tried enabling "azure-graph-user-group-provider" in my NiFi 1.15.3 and I'm getting multiple errors when I complete the configuration of nifi.properties and authorizers.xml and the nifi is not starting.   Error getting:     Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.apache.nifi.web.security.configuration.AuthenticationSecurityConfiguration': Unsatisfied dependency expressed through constructor parameter 2; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authorizer': FactoryBean threw exception on object creation; nested exception is java.lang.UnsupportedOperationException: JsonNull       Current nifi.properties configuration:     # OpenId Connect SSO Properties # nifi.security.user.oidc.discovery.url=https://login.microsoftonline.com/543*****-****/v2.0/.well-known/openid-configuration nifi.security.user.oidc.connect.timeout=5 secs nifi.security.user.oidc.read.timeout=5 secs nifi.security.user.oidc.client.id=f37e8c38-****** nifi.security.user.oidc.client.secret=GZI7Q~RGEL-******* nifi.security.user.oidc.preferred.jwsalgorithm= nifi.security.user.oidc.additional.scopes=profile nifi.security.user.oidc.claim.identifying.user=upn nifi.security.user.oidc.fallback.claims.identifying.user=       Authorizers.xml   <authorizers> <userGroupProvider> <identifier>file-user-group-provider</identifier> <class>org.apache.nifi.authorization.FileUserGroupProvider</class> <property name="Users File">./conf/users.xml</property> <property name="Legacy Authorized Users File"></property> <property name="Initial User Identity 1">CN=admin, OU=NiFi</property> </userGroupProvider> <userGroupProvider> <identifier>azure-graph-user-group-provider</identifier> <class>org.apache.nifi.authorization.azure.AzureGraphUserGroupProvider</class> <property name="Refresh Delay">5 mins</property> <property name="Authority Endpoint">https://login.microsoftonline.com</property> <property name="Directory ID">94416a-b*****-*****-****</property> <property name="Application ID">e37e88-*****-*****-****</property> <property name="Client Secret">TZDSQ~*****-*****-****</property> <!--<property name="Group Filter Prefix">Nifi-AAD</property>--> <property name="Group Filter Suffix"></property> <property name="Group Filter Substring"></property> <property name="Group Filter List Inclusion"></property> <property name="Page Size">55</property> <property name="Claim for Username">upn</property> </userGroupProvider> <accessPolicyProvider> <identifier>file-access-policy-provider</identifier> <class>org.apache.nifi.authorization.FileAccessPolicyProvider</class> <property name="User Group Provider">file-user-group-provider</property> <property name="Authorizations File">./conf/authorizations.xml</property> <property name="Initial Admin Identity">CN=admin, OU=NiFi</property> <property name="Legacy Authorized Users File"></property> <property name="Node Identity 1"></property> <property name="Node Group"></property> </accessPolicyProvider> <authorizer> <identifier>managed-authorizer</identifier> <class>org.apache.nifi.authorization.StandardManagedAuthorizer</class> <property name="Access Policy Provider">file-access-policy-provider</property> </authorizer> <authorizer> <identifier>single-user-authorizer</identifier> <class>org.apache.nifi.authorization.single.user.SingleUserAuthorizer</class> </authorizer> </authorizers>     It would be much appreciated If anybody can help on this at the earliest.   Thanks in Advance! ... View more