When I try to restore my database,there is an error "Confluence cluster node will not start up because the build number in the database [7202] doesn't match either the application build number [8100] or the home directory build number [8100]",but now I change the home directory build number to 7202,there is another error : org.apache.velocity.exception.MethodInvocationException: Invocation of method 'isShowSignUp' in class com.atlassian.confluence.user.actions.LoginAction threw exception java.lang.NullPointerException: Application cannot be null at /login.vm[line 6, column 28].
I don't know how to solve it.