Reset the password by going ahead with the "write" property.
Delete once and drag-drop again at the same place and click OK.
you need to reset the flowchart and run them again, you'll not get the error. I had faced the same issue earlier and got fixed. It sometimes happens due to the slowness of your internet connection BP not able to read the data item info and directly moved to next steps, to fix it, you can use wait functionality and give the 8-10 sec of wait time. Hope this helps.