Uncaught exception 'Exception' with message 'Please ensure

using Membership Pro 2 V1.0.1

/wp-admin/admin.php?page=membership2-add-member&user_id=2

Fatal Error
Uncaught exception 'Exception' with message 'Please ensure that the <span class="ms-bold">Username</span> information is completed.Please ensure that the <span class="ms-bold">Email address</span> information is completed.Please ensure that the <span class="ms-bold">Password</span> information is completed.Please ensure that the <span class="ms-bold">Password confirmation</span> information is completed.The email address is not valid, sorry.'