Describe the issue
The configuration file could not be opened. when clicking on Open Configuration File

What behavior did you expect?
Expected to open bitcoin.conf

How reliably can you reproduce the issue, what are the steps to do so?
Lanuch Bitcoin Core

What version of Bitcoin Core are you using, where did you get it (website, self-compiled, etc)?
https://bitcoin.org/en/download
v0.17.1

What type of machine are you observing the error on (OS/CPU and disk type)?
OSX