I’m posting the _site_transient_update_plugins again here:

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Updating is recommended.";}s:53:"artiss-transient-cleaner/artiss-transient-cleaner.php";O:8:"stdClass":7:{s:2:"id";s:5:"36582";s:4:"slug";s:24:"artiss-transient-cleaner";s:6:"plugin";s:53:"artiss-transient-cleaner/artiss-transient-cleaner.php";s:11:"new_version";s:5:"1.4.1";s:3:"url";s:55:"https://wordpress.org/plugins/artiss-transient-cleaner/";s:7:"package";s:73:"https://downloads.wordpress.org/plugin/artiss-transient-cleaner.1.4.1.zip";s:14:"upgrade_notice";s:86:"Urgent update to fix a bug that will affect those running WordPress before version 4.4";}s:41:"transients-manager/transients-manager.php";O:8:"stdClass":6:{s:2:"id";s:5:"50322";s:4:"slug";s:18:"transients-manager";s:6:"plugin";s:41:"transients-manager/transients-manager.php";s:11:"new_version";s:5:"1.7.2";s:3:"url";s:49:"https://wordpress.org/plugins/transients-manager/";s:7:"package";s:61:"https://downloads.wordpress.org/plugin/transients-manager.zip";}s:23:"wordfence/wordfence.php";O:8:"stdClass":6:{s:2:"id";s:5:"25305";s:4:"slug";s:9:"wordfence";s:6:"plugin";s:23:"wordfence/wordfence.php";s:11:"new_version";s:6:"6.0.24";s:3:"url";s:40:"https://wordpress.org/plugins/wordfence/";s:7:"package";s:59:"https://downloads.wordpress.org/plugin/wordfence.6.0.24.zip";}s:27:"wp-optimize/wp-optimize.php";O:8:"stdClass":6:{s:2:"id";s:4:"6250";s:4:"slug";s:11:"wp-optimize";s:6:"plugin";s:27:"wp-optimize/wp-optimize.php";s:11:"new_version";s:8:"1.8.9.10";s:3:"url";s:42:"https://wordpress.org/plugins/wp-optimize/";s:7:"package";s:63:"https://downloads.wordpress.org/plugin/wp-optimize.1.8.9.10.zip";}}}

Here you go

• This reply was modified 8 years, 8 months ago by melwade.

I have even deleted all plugins but still had the problem.

Here you go…