A fatal MySQL error was encountered.

Query: SELECT series.* FROM fanfiction_inseries as list, fanfiction_series as series WHERE list.sid = AND series.seriesid = list.seriesid
Error: (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 'AND series.seriesid = list.seriesid' at line 1