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ProjectOptionValueError: display the config option description It gives a bit more context of the problem for the user. Example message with the description included: `Error: Invalid value: 'invalid_debug_mode' is not one of 'always', 'modified', 'manual'. for option `debug_load_mode` (Allows one to control when PlatformIO should load debugging firmware to the end target) in section [env:nodemcu]` Co-authored-by: Ivan Kravets <me@ikravets.com>