mysqli_sql_exception: 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 'from t_ereignis where kateg_1 = 'Wolle' and kateg_2 = 'Segeln' and kateg_3 = 'Si' at line 5

An unforeseen error has occured. This is most likely a bug somewhere. It might be a problem in the sqlquery plugin.

More info has been written to the DokuWiki error log.