Error message

• Warning: ini_set(): Session save handler "user" cannot be set by ini_set() in include_once() (line 144 of /home2/h8o7h9r1/public_html/sites/default/settings.php).
• Warning: Undefined array key 0 in taxonomy_field_views_data() (line 444 of /home2/h8o7h9r1/public_html/sites/all/modules/views/modules/taxonomy.views.inc).
• Warning: Trying to access array offset on value of type null in taxonomy_field_views_data() (line 444 of /home2/h8o7h9r1/public_html/sites/all/modules/views/modules/taxonomy.views.inc).
• Warning: Undefined array key 0 in taxonomy_field_views_data() (line 444 of /home2/h8o7h9r1/public_html/sites/all/modules/views/modules/taxonomy.views.inc).
• Warning: Trying to access array offset on value of type null in taxonomy_field_views_data() (line 444 of /home2/h8o7h9r1/public_html/sites/all/modules/views/modules/taxonomy.views.inc).
• Deprecated function: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in classified_url_outbound_alter() (line 1755 of /home2/h8o7h9r1/public_html/sites/all/modules/ed_classified/classified.module).