error in library for ConvexHullDemo process

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Re: error in library for ConvexHullDemo process

soshi
Geotiff image dosen't have any problem, I tested using WCS request builder in geoserver and  I put it under Root folder in Tomcat as well. I sent wps request using url address (under webapp folder) and got response properly.
at earlier post, I added two different images. now I tested two same images (just jask.tif) using two GetCoverage Request and got following error.

This XML file does not appear to have any style information associated with it. The document tree is shown below.
<ows:ExceptionReport xmlns:ows="http://www.opengis.net/ows/1.1" version="1.0.0">
<ows:Exception exceptionCode="NoApplicableCode">
<ows:ExceptionText>
There went something wrong with parsing the POST data: The processing instruction target matching "[xX][mM][lL]" is not allowed.
</ows:ExceptionText>
</ows:Exception>
<ows:Exception exceptionCode="JAVA_StackTrace">
<ows:ExceptionText>
org.n52.wps.server.ExceptionReport: There went something wrong with parsing the POST data: The processing instruction target matching "[xX][mM][lL]" is not allowed. at org.n52.wps.server.handler.RequestHandler.<init>(RequestHandler.java:233) at org.n52.wps.server.WebProcessingService.doPost(WebProcessingService.java:331) at javax.servlet.http.HttpServlet.service(HttpServlet.java:648) at org.n52.wps.server.WebProcessingService.service(WebProcessingService.java:362) at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.apache.catalina.filters.CorsFilter.handleNonCORS(CorsFilter.java:410) at org.apache.catalina.filters.CorsFilter.doFilter(CorsFilter.java:169) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at com.thetransactioncompany.cors.CORSFilter.doFilter(CORSFilter.java:169) at com.thetransactioncompany.cors.CORSFilter.doFilter(CORSFilter.java:232) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:108) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:522) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:1096) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:760) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1480) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745) Caused by: org.xml.sax.SAXParseException; lineNumber: 2; columnNumber: 6; The processing instruction target matching "[xX][mM][lL]" is not allowed. at org.apache.xerces.parsers.DOMParser.parse(Unknown Source) at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source) at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:121) at org.n52.wps.server.handler.RequestHandler.<init>(RequestHandler.java:187) ... 33 more
</ows:ExceptionText>
</ows:Exception>
<ows:Exception exceptionCode="JAVA_RootCause">
<ows:ExceptionText>
The processing instruction target matching "[xX][mM][lL]" is not allowed.
</ows:ExceptionText>
<ows:ExceptionText>
org.xml.sax.SAXParseException; lineNumber: 2; columnNumber: 6; The processing instruction target matching "[xX][mM][lL]" is not allowed. at org.apache.xerces.parsers.DOMParser.parse(Unknown Source) at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source) at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:121) at org.n52.wps.server.handler.RequestHandler.<init>(RequestHandler.java:187) at org.n52.wps.server.WebProcessingService.doPost(WebProcessingService.java:331) at javax.servlet.http.HttpServlet.service(HttpServlet.java:648) at org.n52.wps.server.WebProcessingService.service(WebProcessingService.java:362) at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.apache.catalina.filters.CorsFilter.handleNonCORS(CorsFilter.java:410) at org.apache.catalina.filters.CorsFilter.doFilter(CorsFilter.java:169) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at com.thetransactioncompany.cors.CORSFilter.doFilter(CORSFilter.java:169) at com.thetransactioncompany.cors.CORSFilter.doFilter(CORSFilter.java:232) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:108) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:522) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:1096) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:760) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1480) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745)
</ows:ExceptionText>
</ows:Exception>
</ows:ExceptionReport>
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