# Transcoder stopped working
**URL:** https://community.wowza.com/t/transcoder-stopped-working/44897
**Category:** Wowza Streaming Engine
**Created:** [April 8, 2016, 11:51am UTC](https://community.wowza.com/t/transcoder-stopped-working/44897 "2016-04-08T11:51:39Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Oleg\_Artemov1](https://community.wowza.com/u/Oleg_Artemov1)
#### Post date: [April 8, 2016, 11:51am UTC](https://community.wowza.com/t/transcoder-stopped-working/44897/1 "2016-04-08T11:51:39Z")
Hello.
I have a trouble with transcoder.
I have a worked application with working transcoder, but something happens and its stop work.
I can not understand what is the problem - i don’t change any setting, its just stop working (((
Have a stack trace from winstone
[https://cloud.mail.ru/public/MM1k/3WYMMMc1Y](https://cloud.mail.ru/public/MM1k/3WYMMMc1Y)
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### Author:  [@Oleg\_Artemov1](https://community.wowza.com/u/Oleg_Artemov1)
#### Post date: [April 8, 2016, 12:41pm UTC](https://community.wowza.com/t/transcoder-stopped-working/44897/2 "2016-04-08T12:41:40Z")
from winstone.log after i try to change settings of transcoder (enable/disable, save it)
> javax.servlet.ServletException: File "/WEB-INF/jsp/server/transcoderencode/HelpEncode\_.jsp" not found
>
> at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:319)
>
> at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
>
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
>
> at net.winstone.core.ServletConfiguration.execute(ServletConfiguration.java:270)
>
> at net.winstone.core.SimpleRequestDispatcher.include(SimpleRequestDispatcher.java:163)
>
> at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:968)
>
> at org.apache.jsp.WEB\_002dINF.jsp.server.transcoderencode.ViewEncode\_jsp.\_jspService(Unknown Source)
>
> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
>
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
>
> at net.winstone.core.ServletConfiguration.execute(ServletConfiguration.java:270)
>
> at net.winstone.core.SimpleRequestDispatcher.include(SimpleRequestDispatcher.java:163)
>
> at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:968)
>
> at org.apache.jsp.WEB\_002dINF.jsp.server.transcoderencode.index\_jsp.\_jspService(Unknown Source)
>
> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
>
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
>
> at net.winstone.core.ServletConfiguration.execute(ServletConfiguration.java:270)
>
> at net.winstone.core.SimpleRequestDispatcher.forward(SimpleRequestDispatcher.java:290)
>
> at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)
>
> at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:263)
>
> at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1208)
>
> at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:992)
>
> at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:939)
>
> at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
>
> at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
>
> at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827)
>
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
>
> at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
>
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
>
> at net.winstone.core.ServletConfiguration.execute(ServletConfiguration.java:270)
>
> at net.winstone.core.SimpleRequestDispatcher.forward(SimpleRequestDispatcher.java:290)
>
> at net.winstone.core.SimpleRequestDispatcher.doFilter(SimpleRequestDispatcher.java:332)
>
> at com.wowza.wms.webapp.RequestLoggingFilter.doFilter(RequestLoggingFilter.java:35)
>
> at net.winstone.core.FilterConfiguration.execute(FilterConfiguration.java:189)
>
> at net.winstone.core.SimpleRequestDispatcher.doFilter(SimpleRequestDispatcher.java:321)
>
> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
>
> at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
>
> at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
>
> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>
> at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
>
> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>
> at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
>
> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>
> at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
>
> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>
> at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
>
> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>
> at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
>
> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>
> at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150)
>
> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>
> at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:183)
>
> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>
> at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
>
> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>
> at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
>
> at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>
> at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
>
> at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
>
> at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:343)
>
> at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:260)
>
> at net.winstone.core.FilterConfiguration.execute(FilterConfiguration.java:189)
>
> at net.winstone.core.SimpleRequestDispatcher.doFilter(SimpleRequestDispatcher.java:321)
>
> at com.wowza.wms.webapp.Utf8Filter.doFilter(Utf8Filter.java:35)
>
> at net.winstone.core.FilterConfiguration.execute(FilterConfiguration.java:189)
>
> at net.winstone.core.SimpleRequestDispatcher.doFilter(SimpleRequestDispatcher.java:321)
>
> at net.winstone.core.SimpleRequestDispatcher.forward(SimpleRequestDispatcher.java:288)
>
> at net.winstone.core.listener.RequestHandlerThread.processRequest(RequestHandlerThread.java:213)
>
> at net.winstone.core.listener.RequestHandlerThread.run(RequestHandlerThread.java:144)
>
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
>
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)
>
> at net.winstone.util.BoundedExecutorService$1.run(BoundedExecutorService.java:81)
>
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>
> at java.lang.Thread.run(Thread.java:745)
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### Author:  [@sal\_jefferson](https://community.wowza.com/u/sal_jefferson)
#### Post date: [April 8, 2016, 6:24am UTC](https://community.wowza.com/t/transcoder-stopped-working/44897/3 "2016-04-08T06:24:16Z")
Hello there and welcome to the Wowza support forum.
I think the best course of action here would be to open a support ticket. To do so please follow the [steps outlined here](https://www.wowza.com/support/open-ticket)
Best,
Salvadore