Error message

• Notice: Undefined offset: 1 in theme_aggregator_block_item() (line 734 of /var/www/drupal/modules/aggregator/aggregator.module).
• Notice: Undefined offset: 1 in theme_aggregator_block_item() (line 734 of /var/www/drupal/modules/aggregator/aggregator.module).
• Notice: Undefined offset: 1 in theme_aggregator_block_item() (line 734 of /var/www/drupal/modules/aggregator/aggregator.module).
• Notice: Undefined offset: 1 in theme_aggregator_block_item() (line 734 of /var/www/drupal/modules/aggregator/aggregator.module).
• Notice: Undefined offset: 1 in theme_aggregator_block_item() (line 734 of /var/www/drupal/modules/aggregator/aggregator.module).
• Notice: Undefined offset: 1 in theme_aggregator_block_item() (line 734 of /var/www/drupal/modules/aggregator/aggregator.module).
• Notice: Undefined offset: 1 in theme_aggregator_block_item() (line 734 of /var/www/drupal/modules/aggregator/aggregator.module).