hitting the following issue with example extension - ./build/debug_centos7/osquery/osqueryd --allow_unsafe --pidfile /tmp/osquery.pid tabase_path /tmp/osquery.db --extensions_autoload=/etc/osquery/extensions.load --extensions_timeout=3 --extensions_interval=3 W0501 225649.618551 3990 options.cpp:51] Cannot set unknown or invalid flag: optionA E0501 225649.635637 3991 example_extension.cpp:104] Failed adding registry broadcast