I just ran pio update in Visual Studio Code with platformio. Now I get the following error when I open the IDE:
PlatformIO: IntelliSense Index failed: Error: Detected unknown package 'espressif8266_stage'
I have verified that espressif8266_stage is installed correctly by running platformio platform install https://github.com/platformio/platform-espressif8266.git#feature/stage, so that is not the problem.
When I try to build a project using the espressif8266_stage platform I get
PlatformManager: Installing espressif8266_stage
Error: Detected unknown package 'espressif8266_stage'
The terminal process terminated with exit code: 1
in the console. What is going on?