Error message

• Notice: unserialize(): Error at offset 6538 of 14834 bytes in DrupalDatabaseCache->prepareItem() (line 434 of /web/git-svn-clones/WikiPop/includes/cache.inc).
• Warning: Invalid argument supplied for foreach() in field_attach_load() (line 660 of /web/git-svn-clones/WikiPop/modules/field/field.attach.inc).