Error message

• Warning: Cannot modify header information - headers already sent by (output started at /home/pmccert1/public_html/index.php:1) in _drupal_bootstrap_page_cache() (line 2412 of /home/pmccert1/public_html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/pmccert1/public_html/index.php:1) in drupal_send_headers() (line 1236 of /home/pmccert1/public_html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/pmccert1/public_html/index.php:1) in drupal_send_headers() (line 1236 of /home/pmccert1/public_html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/pmccert1/public_html/index.php:1) in drupal_send_headers() (line 1236 of /home/pmccert1/public_html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/pmccert1/public_html/index.php:1) in drupal_send_headers() (line 1236 of /home/pmccert1/public_html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/pmccert1/public_html/index.php:1) in drupal_send_headers() (line 1236 of /home/pmccert1/public_html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/pmccert1/public_html/index.php:1) in drupal_send_headers() (line 1232 of /home/pmccert1/public_html/includes/bootstrap.inc).
• PDOException: SQLSTATE[HY000]: General error: 3065 Expression #1 of ORDER BY clause is not in SELECT list, references column 'pmccert_drupal.tv.weight' which is not in SELECT list; this is incompatible with DISTINCT: SELECT DISTINCT tv.vid AS vid FROM {node} n INNER JOIN {taxonomy_index} ti ON n.nid = ti.nid INNER JOIN {taxonomy_term_data} ttd ON ti.tid = ttd.tid INNER JOIN {taxonomy_vocabulary} tv ON ttd.vid = tv.vid WHERE (n.nid = :db_condition_placeholder_0) ORDER BY tv.weight ASC, tv.name ASC LIMIT 1 OFFSET 0; Array ( [:db_condition_placeholder_0] => 10 ) in _taxonomy_breadcrumb_node_get_lightest_term() (line 29 of /home/pmccert1/public_html/sites/all/modules/taxonomy_breadcrumb/taxonomy_breadcrumb.inc).