Error message

• Deprecated function: strip_tags(): Passing null to parameter #1 ($string) of type string is deprecated in text_field_formatter_view() (line 289 of /var/www/localhost/htdocs/drupal7/modules/field/modules/text/text.module).
• Deprecated function: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in path_alias_xt_url_outbound_alter() (line 140 of /var/www/localhost/htdocs/drupal7/sites/all/modules/path_alias_xt/path_alias_xt.module).