Error message

Notice: Undefined index: views_form_pictures_block_1 in drupal_retrieve_form() (line 809 of /home/devonjun/public_html/includes/form.inc).
Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'views_form_pictures_block_1' not found or invalid function name in drupal_retrieve_form() (line 844 of /home/devonjun/public_html/includes/form.inc).
Notice: Undefined index: step in views_bulk_operations_form_alter() (line 327 of /home/devonjun/public_html/sites/all/modules/views_bulk_operations/views_bulk_operations.module).
Notice: Undefined index: show_view_elements in template_preprocess_views_view() (line 159 of /home/devonjun/public_html/sites/all/modules/views/theme/theme.inc).