I'm a new QGIS user running 3.14.0 on a Mac with Mojave 10.14.6. While following along with this tutorial (https://www.youtube.com/watch?v=kCnNWyl9qSE), I reached around the 22 minute mark and encountered an issue.
When attempting to create a "New GeoPackage Layer" by importing an existing .gpkg file I've already created, I click "..." next to Database expecting to be able to browse my computer and import this file. However, while I can see the file I want it is grayed out/not able to be selected. The window that pops up says "Save As..."; it seems like my only option is to create and save a brand new GeoPackage layer rather than create a new one using the existing .gpkg file like the tutorial does. What I need to be able to do is select "MyFirstData.gpkg" (image below), but it won't let me.
Especially since I'm so new to QGIS, I feel clueless about how to fix this problem and I can't continue the tutorial unless I can manage to successfully import and existing .gpkg file.
Why does my system work differently than the one in the tutorial and why can I only "Save As" rather than upload existing files?