What is the mean of the sqljdbc usage?

When i connect to the sqlserver, i get the error:

what is the meaning of language between the "elk_monitor"???It is so werid.

Here is my config:
input {
jdbc {
jdbc_driver_library => "../ojdbc/sqljdbc4.jar"
jdbc_driver_class => "com.microsoft.sqlserver.jdbc.SQLServerDriver"
jdbc_connection_string => "jdbc:sqlserver://;databaseName=MSSQLSERVER"
jdbc_user => "elk_monitor"
jdbc_password => "elk_monitor"
statement => "select * from table"

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