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Published 12 hours ago • verified publisher icon Stirling-Tools

[Bug]: Optional group (layer) already exists: Layer0

Open DavideRutigliano opened this issue 7 months ago • 3 comments

Installation Method

Docker

The Problem

I am trying to merge some PDFs using pdf-to-single-page feature as a step in a pipeline, but as soon as I add pdf-to-single-page I get a blank txt document as output of the pipeline.

I think the issue is related to pdf-to-single-page operation itself, and indeed when I run it outside the pipeline I get the error below. I am not 100% sure but I think I have already used this feature before and successfully merged PDFs with same Stirling version (0.45.6).

Is Optional group (layer) already exists: Layer0 a known issue / related to my PDFs?

Version of Stirling-PDF

0.45.6

Last Working Version of Stirling-PDF

0.45.6

Page Where the Problem Occurred

https://<REDACTED>/pdf-to-single-page

Docker Configuration

Relevant Log Output

java.lang.IllegalArgumentException: Optional group (layer) already exists: Layer0
	at org.apache.pdfbox.multipdf.LayerUtility.appendFormAsLayer(LayerUtility.java:260)
	at stirling.software.SPDF.controller.api.ToSinglePageController.pdfToSinglePage(ToSinglePageController.java:85)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:258)
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:191)
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:118)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:986)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:891)
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1089)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:979)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014)
	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:914)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:547)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:614)
	at org.eclipse.jetty.ee10.servlet.ServletHolder.handle(ServletHolder.java:736)
	at org.eclipse.jetty.ee10.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1621)
	at org.eclipse.jetty.ee10.websocket.servlet.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:195)
	at org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1593)
	at stirling.software.SPDF.config.MetricsFilter.doFilterInternal(MetricsFilter.java:49)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1593)
	at stirling.software.SPDF.config.EnterpriseEndpointFilter.doFilterInternal(EnterpriseEndpointFilter.java:32)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1593)
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1593)
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1593)
	at org.springframework.web.filter.ServerHttpObservationFilter.doFilterInternal(ServerHttpObservationFilter.java:114)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1593)
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.eclipse.jetty.ee10.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee10.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1593)
	at org.eclipse.jetty.ee10.servlet.ServletHandler$MappedServlet.handle(ServletHandler.java:1554)
	at org.eclipse.jetty.ee10.servlet.ServletChannel.dispatch(ServletChannel.java:819)
	at org.eclipse.jetty.ee10.servlet.ServletChannel.handle(ServletChannel.java:436)
	at org.eclipse.jetty.ee10.servlet.ServletHandler.handle(ServletHandler.java:469)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:575)
	at org.eclipse.jetty.ee10.servlet.SessionHandler.handle(SessionHandler.java:717)
	at org.eclipse.jetty.server.handler.ContextHandler.handle(ContextHandler.java:1064)
	at org.eclipse.jetty.server.Handler$Wrapper.handle(Handler.java:740)
	at org.eclipse.jetty.server.handler.EventsHandler.handle(EventsHandler.java:81)
	at org.eclipse.jetty.server.Server.handle(Server.java:182)
	at org.eclipse.jetty.server.internal.HttpChannelState$HandlerInvoker.run(HttpChannelState.java:662)
	at org.eclipse.jetty.server.internal.HttpConnection.onFillable(HttpConnection.java:416)
	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:322)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:99)
	at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:480)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:443)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:293)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.run(AdaptiveExecutionStrategy.java:201)
	at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:311)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:979)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1209)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1164)
	at java.base/java.lang.Thread.run(Thread.java:1583)

Additional Information

No response

Browsers Affected

Chrome

No Duplicate of the Issue

  • [x] I have verified that there are no existing issues raised related to my problem.

DavideRutigliano avatar May 05 '25 20:05 DavideRutigliano

I guess this issue is specific to the PDFs I am trying to merge. If I use other PDFs (e.g., this paper) I can successfully merge to single page, and it also works in a pipeline with other operations before/after single page merge.

DavideRutigliano avatar May 05 '25 21:05 DavideRutigliano

@DavideRutigliano Are you able to provide us the file that caused this so we can work on identifying how to fix it? you can email it to [email protected]

Frooodle avatar May 05 '25 22:05 Frooodle

@Frooodle Actually that's my wife ID card so it wont be truly possible to share it 🥲

BTW that was generated with apple notes document scan, maybe that could be the source of the issue. PDFs generated by printer with normal scan work without issues.

Will keep you posted once I have time to test out scanning again a non-personal document (that I can share) with apple notes and try merging.

DavideRutigliano avatar May 12 '25 08:05 DavideRutigliano