Stuck at "Executing Task" when trying to Build Firmware

Building… icon just spins forever. Nothing ever happens.

I’m fairly new to PlatformIO so I have no idea whats wrong.

This has happened to me once recently… after about 30 seconds of waiting… I just closed VSCode, ensured that there were no python processes still running in the task manager, and restarted VSCode, and all was good again. Something must have gotten stuck.