XCUITest - Test runner never began executing tests after launching

Whenever I'm trying to run any of my iOS automation tests, only the runner app gets installed and none of the tests actually get executed because the executable is not installed. This issue occurs regardless if installing the app on an iOS Simulator or if using a physical device. When running using the xcodebuild command, I end up getting the following error: CoachUITests-Runner (14419) encountered an error (Test runner never began executing tests after launching. If you believe this error represents a bug, please attach the result bundle). I'm using XCode 12.5 and this issue started occurring randomly without any context. No code whatsoever was changed since last time my tests worked. What am I missing?