office-js-docs-reference: Accessing firstPage and evenPages headers throw a general exception

Trying to get the firstPage and evenPages header, I get a general exception. Why? How are we supposed to get the data from the various headers and footers when we do not control the structure of the document we are reading? lelsteph

      const ooxml: OfficeExtension.ClientResult<string> = reportDoc.sections.items[sectionIndex].getHeader(Word.HeaderFooterType.evenPages).getRange('Content').getOoxml();
      await context.sync();

{
    "name": "RichApi.Error",
    "code": "GeneralException",
    "traceMessages": [],
    "innerError": null,
    "debugInfo": {
        "code": "GeneralException",
        "message": "GeneralException",
        "errorLocation": "Range.getOoxml",
        "statement": "range.getOoxml();",
        "surroundingStatements": [
            "var v = context.root._getObjectByReferenceId(\"t!00000537\");",
            "var header = v.getHeader(...);",
            "// Instantiate {header}",
            "var range = header.getRange(...);",
            "// Instantiate {range}",
            "// >>>>>",
            "range.getOoxml();",
            "// <<<<<"
        ],
        "fullStatements": [
            "Please enable config.extendedErrorLogging to see full statements."
        ]
    },
    "httpStatusCode": 500
}

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Document Details

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• ID: 4e387738-e6fd-1a29-d7e4-3cee0ee81593
• Version Independent ID: c88d2c75-ea01-2dba-bbbb-791de41e1837
• Content: Word.Section class - Office Add-ins
• Content Source: docs/docs-ref-autogen/word/word/word.section.yml
• Product: word
• Technology: add-ins
• GitHub Login: @o365devx
• Microsoft Alias: o365devx