#1298 MacOS 10.15.7 Catalina FreeMindQL.qlgenerator cannot be opened

[Niyam]

on starting up my mac and on reaching the desktop, a dialog box states: "FreemindQL.qlgenerator" cannot be opened because the developer cannot be verified. macOS cannot verify that this app is free from malware.

Mac OS 10.15.7 Catalina
Java Runtime 8 update 281 (just installed this 30 minutes ago, then installed FreeMind)
FreeMind 1.01. (build 0)

i was also prompted to drag and drop FreemindQL.qlgenerator into its appropriate folder which i did prompted with an admin password.

How do i solve this bug?
TIA

niyam