Initial Startup of Wso2 Identity 5.10 is giving error: Admin user can not be assigned to Admin role

You are getting an error saying,

org.wso2.carbon.user.core.UserStoreException: Admin user can not be assigned to Admin role Add-Admin has been set to false. Please do the assign it in user store level

in WSO2IS-5.10 you can set <AddAdmin>true</AddAdmin> in /repository/conf/user-mgt.xml file , in your user-mgt.xml file it is in false state