Unable to install apps on fresh 5X

Unable to install apps on fresh Nexus 5X (20191114)

Summary

Installed /e/ on a Nexus 5X, had to handle the vendor mismatch errors mentioned in other bug reports and reflash. System boots fine and seems to work, but the App store crashes when trying to install any app. The browser crashes when trying to download an apk file (F-Droid), and the Downloads folder in the Files app says "Can't load content at the moment".

Steps to reproduce

Flash /e/, open Apps app, try to install anything. Running only on 5G wifi, no SIM.

What is the current behavior?

Apps and Browser simply crash before apps can be downloaded to be installed.

What is the expected correct behavior?

Files should download from the browser and apps should install from the Apps app.