A Mysql error has occurred while running the script:

• The query you are trying to run is invalid
• Mysql Error Output: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '& 30er-Jahre LIMIT 0,1' at line 3
• SQL Query: SELECT category_id, name, parent_id FROM probid_categories WHERE category_id=20er- & 30er-Jahre LIMIT 0,1