zk7: NPE when click cancel from screen "change role" when login and "forget password"
from screen "change role" (just in login) and "forget password" click cancel, a message about NPE is display.
message is not remain, it immediate back to login screen.
I make break-point in constructor of NPE and capture screen. please consider
issue same when click cancel button on changePasswordPanel. fix by patch IDEMPIERE-1937-changePass.patch