I noticed in the error logs on my site this PHP Notice: “Failed to parse plugin metadata. Try validating your .json file with http://jsonlint.com/ in …/wp-content/plugins/smm-anypagelightbox/sys/plugin-update-checker/plugin-update-checker.php on line 1006. “ What is this error, and how do I correct it? I do not know what .json file it is referencing. Is the plugin update checker even working?