SQL-Error: "SELECT env_6_topics.*, env_6_replys.uberschrift FROM env_6_topics LEFT JOIN env_6_replys ON (env_6_replys.id=env_6_topics.first_reply) WHERE env_6_topics.id=". - 1064: 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 '' at line 1