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Warning: Cannot modify header information - headers already sent by (output started at /home/treedow/public_html/components/com_adsmanager/lib/pagination.php:1) in /home/treedow/public_html/components/com_community/libraries/core.php on line 551
that only Warning message from ads manager component.
you can ignore it by set joomla error reporting to none at joomla backend > system > global configuration