Issue after updating to WP 5.3
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Hi,
after updating to WP 5.3 I get the following wanrnings only in dashboard:Warning: count(): Parameter must be an array or an object that implements Countable in /home/www/aachen50plus.de/wp-admin/includes/plugin.php on line 1392
Warning: Cannot modify header information – headers already sent by (output started at /home/www/aachen50plus.de/wp-admin/includes/plugin.php:1392) in /home/www/aachen50plus.de/wp-includes/functions.php on line 5946
Warning: Cannot modify header information – headers already sent by (output started at /home/www/aachen50plus.de/wp-admin/includes/plugin.php:1392) in /home/www/aachen50plus.de/wp-admin/includes/misc.php on line 1252
Warning: Cannot modify header information – headers already sent by (output started at /home/www/aachen50plus.de/wp-admin/includes/plugin.php:1392) in /home/www/aachen50plus.de/wp-admin/admin-header.php on line 9
Warning: Cannot modify header information – headers already sent by (output started at /home/www/aachen50plus.de/wp-admin/includes/plugin.php:1392) in /home/www/aachen50plus.de/wp-includes/option.php on line 958
Warning: Cannot modify header information – headers already sent by (output started at /home/www/aachen50plus.de/wp-admin/includes/plugin.php:1392) in /home/www/aachen50plus.de/wp-includes/option.php on line 959
I then tested it with the Plugin Health Check and the problems disappeared when I disabled your plugin. Even if I activate twenty twenty or twenty nineteen as a theme during troubleshooting, unfortunately the problem remains.
Best regards,
Hans-GerdThe page I need help with: [log in to see the link]
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