When Exporting a Panel Macro with a Wide Border, an Export Error is Produced

Symptom

When attempting to export a page that includes a Confluence Panel macro with a wide border, an export error is produced with the following log:

CODE

com.k15t.scroll.exporter.pipeline.ExportException: Failed to build and export document model for source com.k15t.scroll.exporter.pipeline.source.DefaultSource@76563640[id=328097,title=Panel border].
    at com.k15t.scroll.exporter.pipeline.output.ToWordDocumentAppender.apply(ToWordDocumentAppender.java:52)
   
 ***code abridged***
   
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Caused by: com.k15t.scroll.core.extension.exporter.ExporterException: com.k15t.scroll.words.messages.asposeexception
    at com.k15t.scroll.words.exporter.WordsExporter.export(WordsExporter.java:301)
    at com.k15t.scroll.exporter.pipeline.output.ToWordDocumentAppender.apply(ToWordDocumentAppender.java:50)
    ... 57 more
Caused by: java.lang.RuntimeException: Error writing to output stream
    at com.k15t.scroll.words.renderer.AbstractWordsRenderer.end(AbstractWordsRenderer.java:36)
    at com.k15t.scroll.words.exporter.WordsExporter.exportElementWithRenderer(WordsExporter.java:477)
    at com.k15t.scroll.words.exporter.WordsExporter.exportContent(WordsExporter.java:445)
    at com.k15t.scroll.words.exporter.WordsExporter.exportPage(WordsExporter.java:388)
    at com.k15t.scroll.words.exporter.WordsExporter.export(WordsExporter.java:297)
    ... 58 more
Caused by: com.k15t.scroll.core.extension.exporter.ExporterException: messages.asposeexception
    at com.k15t.scroll.words.DocumentBuilder.endCell(DocumentBuilder.java:1402)
    at com.k15t.scroll.words.DocumentBuilder.endCell(DocumentBuilder.java:1371)
    at com.k15t.scroll.words.renderer.GenericTableRenderer.writeEnd(GenericTableRenderer.java:109)
    at com.k15t.scroll.words.renderer.AbstractWordsRenderer.end(AbstractWordsRenderer.java:33)
    ... 62 more
Caused by: com.k15t.scroll.core.extension.exporter.ExporterException: com.k15t.scroll.words.messages.asposeexception
    at com.k15t.scroll.words.model.CellFormat.applyCellFormatting(CellFormat.java:85)
    at com.k15t.scroll.words.DocumentBuilder.endCell(DocumentBuilder.java:1400)
    ... 65 more
Caused by: java.lang.IllegalArgumentException: Parameter name: lineWidth
    at com.aspose.words.Border.zzZ(Unknown Source)
    at com.aspose.words.Border.setLineWidth(Unknown Source)
    at com.k15t.scroll.words.model.CellFormat.applyCellFormatting(CellFormat.java:53)
    ... 66 more

Cause

This is caused because it is possible to define a Confluence Panel macro with an unlimited border pixel width value and the library that we use to generate the Word file exports supports a maximum border pixel width value of 31.

Resolution

To resolve this issue, you can reduce the border pixel width for the Confluence Panel macro to 31 or less.