we faced the same issue in our project, though I cannot see your error screen properly.
But I can guide you in right direction.
Please check the version of your “ZUJE_MASS_USER_MGMT” or the transport you applied to install it.
Try to get the latest version and then go through the note 1668966 and change the value DATA: lv_value TYPE uj_string. according to note Note 1821871 - BPC NW: How to implement Mass User Management Tool for BPC version 10.0
