The destination form was closed; I cannot act on your selection

I can’t clear form field (LBF-form) during the code choosing.

I can set up a new meaning but during the pressing DELETE button form shows an error.
“The destination form was closed; I cannot act on your selection.”
Reason: opener.del_related = undefined
What is the probably reason of that?


I’m using OpenEMR version 5.0.1

Browser: Chrome
Operating System: Win 10 or Linux