Getting "Uncaught server error: java.lang.NullPointerException" during read LDAP group on RH-SSO 7.4 after apply the patch 08

Issue

I am getting the following error when I try to read the LDAP group on RH-SSO 7.4 after applying patch 08:

ERROR [org.keycloak.services.error.KeycloakErrorHandler] (default task-1) Uncaught server error: java.lang.NullPointerException
         at org.keycloak.models.cache.infinispan.UserCacheSession.getUserByUsername(UserCacheSession.java:241)
         at org.keycloak.storage.ldap.LDAPStorageProvider.loadUsersByUsernames(LDAPStorageProvider.java:416)
         at org.keycloak.storage.ldap.mappers.membership.MembershipType$1.getGroupMembers(MembershipType.java:120)
         at org.keycloak.storage.ldap.mappers.membership.group.GroupLDAPStorageMapper.getGroupMembers(GroupLDAPStorageMapper.java:593)
         at org.keycloak.storage.ldap.LDAPStorageProvider.getGroupMembers(LDAPStorageProvider.java:403)