Warnings after aktivate Plugin

Hello, iam using the Ocean WP Theme. After I install your Plugin i get the following errors:
Any Idea how i can solve this?

Warning: Cannot modify header information - headers already sent by (output started at /www/htdocs/w01cbc4e/ballaballa-tv.de/wordpress_normal/wp-content/plugins/google-trends-und-charts/google-trends-charts.php:65) in /www/htdocs/w01cbc4e/ballaballa-tv.de/wordpress_normal/wp-includes/functions.php on line 6821

Warning: Cannot modify header information - headers already sent by (output started at /www/htdocs/w01cbc4e/ballaballa-tv.de/wordpress_normal/wp-content/plugins/google-trends-und-charts/google-trends-charts.php:65) in /www/htdocs/w01cbc4e/ballaballa-tv.de/wordpress_normal/wp-admin/includes/misc.php on line 1310

Warning: Cannot modify header information - headers already sent by (output started at /www/htdocs/w01cbc4e/ballaballa-tv.de/wordpress_normal/wp-content/plugins/google-trends-und-charts/google-trends-charts.php:65) in /www/htdocs/w01cbc4e/ballaballa-tv.de/wordpress_normal/wp-admin/includes/template.php on line 2026