Foutmelding

• Warning: Cannot modify header information - headers already sent by (output started at /var/www/vhosts/deventerstadsmosterd.nl/httpdocs/includes/common.inc:2820) in drupal_send_headers() (regel 1501 van /var/www/vhosts/deventerstadsmosterd.nl/httpdocs/includes/bootstrap.inc).
• Error: Call to a member function queryReportFeed() on null in google_analytics_counter_report_data() (regel 411 van /var/www/vhosts/deventerstadsmosterd.nl/httpdocs/sites/all/modules/contrib/google_analytics_counter/google_analytics_counter_data.inc).