I have found a couple similar questions (here and here), but they are related to a different script error message than I'm receiving. When I reach the Gallery Authentication section of the server System Settings, I receive a script error stating, "Global catalog not found in forest [our domain]." It references the conf.js JavaScript file in C:\Program Files\Alteryx\bin\public_html\js. I accessed the script and the line of code it references is:
user = JSON.parse(cs.searchActiveDirectory(defaultAdmin))

I reached out to my network team, but they haven't been much help yet. It seems related to an active directory configuration. I am using a Run As service account, which is also the default Gallery admin. Has anyone else run into this before?