exporting encrypted and normal notebook resources together…

Error message

exporting encrypted and normal notebook resources together is not supported

What it means

A single export batch may contain resources from encrypted notebooks OR from normal notebooks, but not both. The mixed set has no consistent decrypt/copy strategy, so exportResourcesEncryptedBox rejects it when at least one encrypted-box resource and at least one normal resource are present.

Solutions

Partition the resource list into encrypted and normal sets and issue separate ExportResources calls per set
Handle the error in the UI by informing the user to export encrypted and normal notebook resources separately

Example fix

// before
ExportResources([]string{"encBox/assets/a.png", "normalBox/assets/b.png"})
// after
ExportResources([]string{"encBox/assets/a.png"})
ExportResources([]string{"normalBox/assets/b.png"})

Defensive patterns

Strategy: validation

Validate before calling

function partitionByEncryption(paths, isEncryptedBox) {
  const encrypted = paths.filter(p => isEncryptedBox(p.split('/')[0]));
  const normal = paths.filter(p => !isEncryptedBox(p.split('/')[0]));
  return { encrypted, normal };
}

Try / catch

try { await exportResources(mixedPaths); }
catch (e) {
  if (String(e).includes('encrypted and normal notebook resources together')) {
    const { encrypted, normal } = partitionByEncryption(mixedPaths, isEncrypted);
    await exportResources(encrypted);
    await exportResources(normal);
  }
}

Prevention

Partition mixed selection exports into encrypted-only and normal-only batches
Inform users that encrypted and normal notebook resources must be exported separately
Track notebook encryption state in the UI before assembling export lists

When it happens

Trigger: ExportResources called with asset paths where some belong to encrypted boxes (IsEncryptedBox true) and others to regular notebooks.

Common situations: Multi-select export of images across notebooks after enabling encryption on some notebooks; plugin collecting all assets referenced by a document that embeds cross-notebook assets.

Understand the failure class

Background: UnsupportedOperationException and "is not supported" errors: when a library deliberately refuses a call — this error's family across 30 libraries.

Related errors

AI-assisted analysis of siyuan-note/siyuan@9f775e8a12 (2026-09-19). Data as JSON: /api/errors/a86c37051d7abf19. Report an issue: GitHub.

Appendix: source

Thrown at kernel/model/export.go:1022

		}
		boxID := ExtractBoxIDFromAssetsPath(resourceFullPath)
		if boxID == "" || !IsEncryptedBox(boxID) {
			hasNormalResource = true
			continue
		}

		assetsPath := filepath.Join(util.DataDir, boxID, "assets")
		if !gulu.File.IsSubPath(assetsPath, resourceFullPath) {
			return "", errors.New("exporting non-asset files from encrypted notebooks is not supported")
		}
		if encryptedBoxID == "" {
			encryptedBoxID = boxID
		} else if encryptedBoxID != boxID {
			return "", errors.New("exporting resources across encrypted notebook boundaries is not supported")
		}
	}
	if encryptedBoxID != "" && hasNormalResource {
		return "", errors.New("exporting encrypted and normal notebook resources together is not supported")
	}
	return
}

func ExportPreview(id string, fillCSSVar bool, accessChecker ...EmbedBlockAccessChecker) (retStdHTML string) {
	if exportErr := withExportReadLockByBlockID(id, func() error {
		blockRefMode := Conf.Export.BlockRefMode
		bt := getExportBlockTree(id)
		if nil == bt {
			return nil
		}

		tree := prepareExportTree(bt)
		if numberErr := applyHeadingNumbersForExport(tree, bt, false); nil != numberErr {
			return numberErr
		}
		tree, exportTreeErr := exportTree(tree, false, true, false, true,
			blockRefMode, Conf.Export.BlockEmbedMode, Conf.Export.FileAnnotationRefMode,

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