Arduino and mbed framework on ble sense

Is that a compile error when using the Build button or an IntelliSense error? The IntelliSense won’t be able to find that framework files if you haven’t built it at least once, because then it will download the framework. Also when in doubt, use the project task “Rebuild IntelliSense” after a build.

I can compile perfectly fine and the IntelliSense works.