Program: 62346
Project: 62346
Buggy source:
protected void produce(boolean askPath,InputHandler handler,FopFactory fopFactory,Path docbookTempfile,Path pdfPath){
  final Path currentTabPath=current.currentPath().get();
  final Path currentTabPathDir=currentTabPath.getParent();
  final String tabText=current.getCurrentTabText().replace("String_Node_Str","String_Node_Str").trim();
  try (FileOutputStream outputStream=new FileOutputStream(pdfPath.toFile())){
    FOUserAgent userAgent=new FOUserAgent(fopFactory);
    userAgent.setURIResolver(new FOURIResolver(true){
      @Override public Source resolve(      String href,      String base) throws TransformerException {
        if (Objects.nonNull(href)) {
          try {
            if (href.charAt(0) == '/')             href="String_Node_Str" + href;
            Path path=Paths.get(URI.create(href));
            if (!Files.exists(path)) {
              Path tryThis=currentTabPathDir.resolve(path.subpath(0,path.getNameCount()));
              if (Files.exists(tryThis)) {
                return super.resolve(tryThis.toUri().toString(),base);
              }
              if (pathResolverService.isImage(path)) {
                Optional<Path> first=IOHelper.find(currentTabPathDir,Integer.MAX_VALUE,(p,attr) -> p.getFileName().equals(path.getFileName())).findFirst();
                if (first.isPresent())                 return super.resolve(first.map(Path::toUri).map(URI::toString).get(),base);
              }
            }
          }
 catch (          Exception e) {
            logger.error("String_Node_Str",e);
          }
        }
        return super.resolve(href,base);
      }
    }
);
    handler.renderTo(userAgent,"String_Node_Str",outputStream);
    Files.deleteIfExists(docbookTempfile);
  }
 catch (  Exception e) {
    logger.error("String_Node_Str",e);
  }
 finally {
    indikatorService.stopProgressBar();
    logger.debug("String_Node_Str");
    controller.addRemoveRecentList(pdfPath);
  }
}

Fixed version (ground truth):
protected void produce(boolean askPath,InputHandler handler,FopFactory fopFactory,Path docbookTempfile,Path pdfPath){
  final Path currentTabPath=current.currentPath().get();
  final Path currentTabPathDir=currentTabPath.getParent();
  final String tabText=current.getCurrentTabText().replace("String_Node_Str","String_Node_Str").trim();
  try (FileOutputStream outputStream=new FileOutputStream(pdfPath.toFile())){
    FOUserAgent userAgent=new FOUserAgent(fopFactory);
    userAgent.setURIResolver(new FOURIResolver(true){
      @Override public Source resolve(      String href,      String base) throws TransformerException {
        if (Objects.nonNull(href)) {
          try {
            if (href.charAt(0) == '/')             href="String_Node_Str" + href;
            Path path=Paths.get(UriComponentsBuilder.fromUriString(href).build().toUri());
            if (!Files.exists(path)) {
              Path tryThis=currentTabPathDir.resolve(path.subpath(0,path.getNameCount()));
              if (Files.exists(tryThis)) {
                return super.resolve(tryThis.toUri().toString(),base);
              }
              if (pathResolverService.isImage(path)) {
                Optional<Path> first=IOHelper.find(currentTabPathDir,Integer.MAX_VALUE,(p,attr) -> p.getFileName().equals(path.getFileName())).findFirst();
                if (first.isPresent())                 return super.resolve(first.map(Path::toUri).map(URI::toString).get(),base);
              }
            }
          }
 catch (          Exception e) {
            logger.error("String_Node_Str",e);
          }
        }
        return super.resolve(href,base);
      }
    }
);
    handler.renderTo(userAgent,"String_Node_Str",outputStream);
    Files.deleteIfExists(docbookTempfile);
  }
 catch (  Exception e) {
    logger.error("String_Node_Str",e);
  }
 finally {
    indikatorService.stopProgressBar();
    logger.debug("String_Node_Str");
    controller.addRemoveRecentList(pdfPath);
  }
}