errors on clearing cache

When clearing the cache using drush this is the errors outputted.

drush cc all

WD php: PDOException: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'b.name' in 'order clause': SELECT b.* [error]
FROM
{simpleads_blocks} b
ORDER BY b.name ASC; Array
(
)
in _simpleads_get_blocks_list() (line 231 of /home/atlasdasaude/public_html/sites/all/modules/simpleads/includes/helper.inc).
Cannot modify header information - headers already sent by (output started at /usr/share/drush/commands/core/clear.cache.inc:2) bootstrap.inc:1216 [warning]
PDOException: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'b.name' in 'order clause': SELECT b.*
FROM
{simpleads_blocks} b
ORDER BY b.name ASC; Array
(
)
em _simpleads_get_blocks_list() (linha 231 de /home/atlasdasaude/public_html/sites/all/modules/simpleads/includes/helper.inc).
Drush command terminated abnormally due to an unrecoverable error.