Support » Plugin: OpenBook Book Data » Error upon activating plugin

  • When I activated the plugin on my site, I get the error message “The plugin generated 112 characters of unexpected output during activation. If you notice “headers already sent” messages, problems with syndication feeds or other issues, try deactivating or removing this plugin.” How can I troubleshoot this further?

    https://wordpress.org/plugins/openbook-book-data/

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