[otrs] Customer User creation error

Hi, I'am having a problem when try to create customer user from admin panel. It giving error the following error: *[Error][Kernel::System::CustomerUser::DB::CustomerUserAdd][Line:601]: ERROR: null value in column "pw" violates not-null constraint, SQL: 'INSERT INTO customer_user * I found in the customer user creation panel that password in not taking from the filed. Please check the attachment. It will clear you. Is there any customer user configuration needed? My installation is straight forward using postgres and otrs version 2.4.7 -EKram