ad sense lite problems

Hi i cannot log-in any more, cookies are denied and above my website it says Warning: Cannot modify header information – headers already sent by (output started at /www/htdocs/w011e695/wp-content/plugins/adsense-now-lite/EzGA.php:1063) in /www/htdocs/w011e695/wp-includes/pluggable.php on line 895 https://www.horizonteentdecken.de,
anybody can help??? please!

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