The nrf toolchain manager seems to fail silently when installing the zephyr sdk on some machines (Ubuntu 22.04), and installs it only partially. First try to install: Zephyr folder was completely empty. Second try: We thought we finally have a good install (first projects worked), but for a specific sample project we figured out that some module folders were still empty, so the zephyr folder is still only partially installed. For example, the ncs/v2.4.2/modules/tee/tf-m/tf-m-tests
folder is empty, and thus a new sample project from https://github.com/zephyrproject-rtos/zephyr/blob/main//samples/subsys/mgmt/mcumgr/smp_svr/README.rst failed to compile because it depends on this folder.
As I said, first time to try to install zephyr SDK with toolchain manager UI, the folder ncs/v2.4.2
stayed completely empty but the UI did not show any error message at all.