This error is caused by duplicate settings about "enable_plugin watcher" in both /devstack/local.conf and /opt/stack/watcher-dashboard/devstack/settings. One solution to this error can be: mv watcher-dashboard/devstack/settings watcher-dashboard/devstack/local_conf.example
This error is caused by duplicate settings about "enable_plugin watcher" in both /devstack/ local.conf and /opt/stack/ watcher- dashboard/ devstack/ settings. One solution to this error can be: mv watcher- dashboard/ devstack/ settings watcher- dashboard/ devstack/ local_conf. example