Error sending pdf

Hi.. great work.. but I got this error:

SEVERE: Servlet.service() for servlet [TikaWebApp] in context with path [/tika] threw exception
java.io.UnsupportedEncodingException: application/pdf
at sun.nio.cs.StreamEncoder.forOutputStreamWriter(StreamEncoder.java:42)
at java.io.OutputStreamWriter.(OutputStreamWriter.java:83)
at com.nidhinova.tika.server.TikaService.getOutputWriter(TikaService.java:444)
at com.nidhinova.tika.server.TikaService.access$100(TikaService.java:77)
at com.nidhinova.tika.server.TikaService$2.write(TikaService.java:268)