Fatal error: Uncaught Propel\Runtime\Map\Exception\ColumnNotFoundException: Cannot fetch ColumnMap for undefined column: ID_ARTICLE_CATEGORY in table article. in /opt/propel_2.0.beta/src/Propel/Runtime/Map/TableMap.php:568 Stack trace: #0 /opt/propel_2.0.beta/src/Propel/Runtime/Map/TableMap.php(831): Propel\Runtime\Map\TableMap->getColumn() #1 /opt/propel_2.0.beta/src/Propel/Runtime/Map/TableMap.php(813): Propel\Runtime\Map\TableMap->getColumnOrValue() #2 /home/hotellec/public_html/mod/gen/Map/ArticleCategoryTableMap.php(311): Propel\Runtime\Map\TableMap->addRelation() #3 /opt/propel_2.0.beta/src/Propel/Runtime/Map/TableMap.php(878): Map\ArticleCategoryTableMap->buildRelations() #4 /opt/propel_2.0.beta/src/Propel/Runtime/Map/TableMap.php(862): Propel\Runtime\Map\TableMap->getRelations() #5 /home/hotellec/public_html/mod/gen/Base/ArticleCategoryQuery.php(672): Propel\Runtime\Map\TableMap->getRelation() #6 /home/hotellec/public_html/mod/gen/Base/ArticleCategoryQuery.php(707): Base\ArticleCategoryQuery->joinArticle() #7 /home/hotellec/public_html/sitemap.php(346): Base\ArticleCategoryQuery->useArticleQuery() #8 {main} thrown in /opt/propel_2.0.beta/src/Propel/Runtime/Map/TableMap.php on line 568