[Bug] XML Parsing Error: no root element found

[mjthoraval]

Is there an existing issue for this?

• I have searched the existing issues

Are you using the latest Zotero and the latest plugin?

• I have confirmed I'm using the latest Zotero and the latest plugin

Environment

• OS: Windows 10
• Zotero Version: 7.0.0-beta.51+7c5600913 (64-bit)
• Plugin Version: 1.0.0-25

Describe the bug

I get the following error when using the Copy Item link: #115

I also get the same error when using the Related selected items: #164
So I guess it is a general problem.

Debug Output

1700749603235 addons.xpi WARN Checking C:\Program Files\Zotero\distribution\extensions for addons

[JavaScript Error: "NS_NOINTERFACE: " {file: "resource://gre/modules/ComponentUtils.jsm" line: 90}]
createInstance@resource://gre/modules/ComponentUtils.jsm:90:36

1700749604753 addons.xpi WARN Addon with ID undefined already installed, older version will be disabled

[JavaScript Error: "Error: Addon must include an id, version, and type" {file: "resource://gre/modules/addons/XPIProvider.jsm" line: 1710}]

[JavaScript Error: "Error: Addon must include an id, version, and type" {file: "resource://gre/modules/addons/XPIProvider.jsm" line: 1710}]

[JavaScript Error: "NS_ERROR_FAILURE: Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsITelemetry.getHistogramById]" {file: "resource://gre/modules/TerminatorTelemetry.jsm" line: 87}]

[JavaScript Error: "NS_ERROR_FAILURE: Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsITelemetry.getHistogramById]" {file: "resource://gre/modules/TerminatorTelemetry.jsm" line: 87}]

[JavaScript Error: "NS_ERROR_FAILURE: Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsITelemetry.getHistogramById]" {file: "resource://gre/modules/TerminatorTelemetry.jsm" line: 87}]

[JavaScript Error: "NS_ERROR_NOT_AVAILABLE" {file: "resource://gre/modules/PartitioningExceptionListService.jsm" line: 92}]

[JavaScript Error: "NotFoundError: Could not get children of file(C:\Users\mjthoraval\AppData\Roaming\Zotero\Zotero\Crash Reports\events) because it does not exist" {file: "resource://gre/modules/CrashManager.jsm" line: 682}]
_getUnprocessedEventsFiles/<@resource://gre/modules/CrashManager.jsm:682:12

[JavaScript Error: "TypeError: headline is null" {file: "chrome://zotero/content/xpcom/progressWindow.js" line: 157}]
changeHeadline@chrome://zotero/content/xpcom/progressWindow.js:157:12
_onWindowLoaded@chrome://zotero/content/xpcom/progressWindow.js:470:35

appName => Zotero, version => 7.0.0-beta.51+7c5600913, os => Windows 10.0 19045, locale => en-GB, extensions => Actions and Tags for Zotero (1.0.0-25, extension), Open PDF for Zotero (0.0.8, extension, disabled), Zotero PDF Preview (1.0.0-4, extension, disabled), Zotero Better Authors (4.0.2, extension, disabled), Translate for Zotero (1.1.0-21, extension, disabled), Better Notes for Zotero (1.1.4-36, extension, disabled), Better BibTex for Zotero (6.7.137, extension, disabled)

(3)(+0155299): itemTree.render(). Displaying Item Tree

(3)(+0000013): Viewing item in pane 0

(4)(+0000003): Registering notifier observer 'itemBox_yN' for [item]

(3)(+0000005): Refreshing item box

(3)(+0000081): Zotero.Items.keepParents() is deprecated -- use Zotero.Items.keepTopLevel() instead

(4)(+0000001): SELECT IA.itemID FROM itemAttachments IA NATURAL JOIN items I LEFT JOIN itemData ID ON (IA.itemID=ID.itemID AND fieldID=13) LEFT JOIN itemDataValues IDV ON (ID.valueID=IDV.valueID) WHERE parentItemID=? AND linkMode NOT IN (3) AND IA.itemID NOT IN (SELECT itemID FROM deletedItems) ORDER BY contentType='application/pdf' DESC, value=? DESC, dateAdded ASC [37558, 'https://www.mdpi.com/2079-6412/10/6/592']

(4)(+0000044): SELECT IA.itemID FROM itemAttachments IA NATURAL JOIN items I LEFT JOIN itemData ID ON (IA.itemID=ID.itemID AND fieldID=13) LEFT JOIN itemDataValues IDV ON (ID.valueID=IDV.valueID) WHERE parentItemID=? AND linkMode NOT IN (3) AND IA.itemID NOT IN (SELECT itemID FROM deletedItems) ORDER BY contentType='application/pdf' DESC, value=? DESC, dateAdded ASC [37558, 'https://www.mdpi.com/2079-6412/10/6/592']

(4)(+0000003): SELECT IA.itemID FROM itemAttachments IA NATURAL JOIN items I LEFT JOIN itemData ID ON (IA.itemID=ID.itemID AND fieldID=13) LEFT JOIN itemDataValues IDV ON (ID.valueID=IDV.valueID) WHERE parentItemID=? AND linkMode NOT IN (3) AND IA.itemID NOT IN (SELECT itemID FROM deletedItems) ORDER BY contentType='application/pdf' DESC, value=? DESC, dateAdded ASC [37558, 'https://www.mdpi.com/2079-6412/10/6/592']

(4)(+0000013): SELECT IA.itemID FROM itemAttachments IA NATURAL JOIN items I LEFT JOIN itemData ID ON (IA.itemID=ID.itemID AND fieldID=13) LEFT JOIN itemDataValues IDV ON (ID.valueID=IDV.valueID) WHERE parentItemID=? AND linkMode NOT IN (3) AND IA.itemID NOT IN (SELECT itemID FROM deletedItems) ORDER BY contentType='application/pdf' DESC, value=? DESC, dateAdded ASC [37558, 'https://www.mdpi.com/2079-6412/10/6/592']

(4)(+0000003): SELECT IA.itemID FROM itemAttachments IA NATURAL JOIN items I LEFT JOIN itemData ID ON (IA.itemID=ID.itemID AND fieldID=13) LEFT JOIN itemDataValues IDV ON (ID.valueID=IDV.valueID) WHERE parentItemID=? AND linkMode NOT IN (3) AND IA.itemID NOT IN (SELECT itemID FROM deletedItems) ORDER BY contentType='application/pdf' DESC, value=? DESC, dateAdded ASC [37558, 'https://www.mdpi.com/2079-6412/10/6/592']

(4)(+0003522): Beginning DB transaction 14uKpKRO

(4)(+0000003): Committed DB transaction 14uKpKRO

(3)(+0000001): [Actions and Tags for Zotero] applyAction {"event":0,"operation":4,"data":"// Copy item link\r\n// @author windingwind\r\n// @link https://github.com/windingwind/zotero-actions-tags/discussions/115\r\n// @Usage Select an item in the library and press the assigned shortcut keys\r\n\r\nif (!item) {\r\n\treturn "[Copy Item Link] item is empty";\r\n}\r\n\r\nconst libraryType = item.library.libraryType;\r\nconst key = item.key;\r\n\r\nlet uri;\r\n\r\nif (libraryType === "user") {\r\n\turi = "zotero://select/library/items/" + key;\r\n}\r\nelse {\r\n\tconst groupID = Zotero.Libraries.get(item.libraryID).groupID;\r\n\turi = "zotero://select/groups/" + groupID + "/items/" + key;\r\n}\r\n\r\nconst clipboard = new Zotero.ActionsTags.api.utils.ClipboardHelper();\r\n\r\nlet linkText;\r\n// Use title\r\nlinkText = item.getField("title");\r\n// Use citation key\r\n// linkText = item.getField("citationKey");\r\n\r\nlet plainText;\r\n// Use plain-text\r\nplainText = uri;\r\n// Use MarkDown\r\n// plainURI = [${linkText}](${uri})\r\nclipboard\r\n\t.addText(plainText, "text/unicode")\r\n\t.addText(<a href=\"${uri}\">${linkText}</a>, "text/html")\r\n\t.copy();\r\n\r\nreturn [Copy Item Link] item link ${uri} copied.","shortcut":"","enabled":true,"menu":"📋 Copy item-link","name":"93 - Copy item-link"} {"itemIDs":[37558]}

(4)(+0000014): Beginning DB transaction vyBhrjXT

(4)(+0000004): Item 37558 has not changed

(4)(+0000001): Committed DB transaction vyBhrjXT

(3)(+0000001): [Actions and Tags for Zotero] applyAction {"event":0,"operation":4,"data":"// Copy item link\r\n// @author windingwind\r\n// @link https://github.com/windingwind/zotero-actions-tags/discussions/115\r\n// @Usage Select an item in the library and press the assigned shortcut keys\r\n\r\nif (!item) {\r\n\treturn "[Copy Item Link] item is empty";\r\n}\r\n\r\nconst libraryType = item.library.libraryType;\r\nconst key = item.key;\r\n\r\nlet uri;\r\n\r\nif (libraryType === "user") {\r\n\turi = "zotero://select/library/items/" + key;\r\n}\r\nelse {\r\n\tconst groupID = Zotero.Libraries.get(item.libraryID).groupID;\r\n\turi = "zotero://select/groups/" + groupID + "/items/" + key;\r\n}\r\n\r\nconst clipboard = new Zotero.ActionsTags.api.utils.ClipboardHelper();\r\n\r\nlet linkText;\r\n// Use title\r\nlinkText = item.getField("title");\r\n// Use citation key\r\n// linkText = item.getField("citationKey");\r\n\r\nlet plainText;\r\n// Use plain-text\r\nplainText = uri;\r\n// Use MarkDown\r\n// plainURI = [${linkText}](${uri})\r\nclipboard\r\n\t.addText(plainText, "text/unicode")\r\n\t.addText(<a href=\"${uri}\">${linkText}</a>, "text/html")\r\n\t.copy();\r\n\r\nreturn [Copy Item Link] item link ${uri} copied.","shortcut":"","enabled":true,"menu":"📋 Copy item-link","name":"93 - Copy item-link"} {"itemID":37558}

(3)(+0018526): itemTree.render(). Displaying Item Tree

Anything else?

I see that there is a related post in the forums:
https://forums.zotero.org/discussion/109402/zotero-7-beta-report-a-error-xml-parsing-error-no-root-element-found
So it may be a more general bug. But I can only reproduce reliably with this plugin so far.

[windingwind]

Well, this seems to be an error with loading the progressWindow, a built-in module of Zotero. I haven't update the plugin for weeks, so it's unlikely to be caused by this plugin. Do you have any idea when this starts?

[mjthoraval]

I think that I started seeing this yesterday, around the same time as making this post in the forum:
https://forums.zotero.org/discussion/109622/zotero-7-beta-error-when-drawing-lines

I also see the popup window when I start Zotero with only your Better Notes plugin.
So the root of the bug is something shared between the Better Notes plugin during startup and the Actions and Tags plugin when triggering the events mentioned above.

I don't know if there is something specific to my library that would trigger the bug. But at least one other person in the forums reported the same error message, when using other plugins.
Can anyone reproduce the bug?

[windingwind]

Try to run this in Tool - Developer - runJS and see what happens:

progressWin = new Zotero.ProgressWindow();
progressWin.changeHeadline('test');
progress = new progressWin.ItemProgress(
  undefined, 'test'
);
progressWin.show();

If that can reproduce the bug, disable all plugins and enable them one by one with restart and run to see when it starts to happen.

[mjthoraval]

Your script can trigger the bug with all plugins disabled.

Should I report in the forums, or does it fit better in the devs forums?
https://groups.google.com/g/zotero-dev

I have seen this post also in the forums where they had observed a similar error message and found a fix to it:
https://forums.zotero.org/discussion/105584/an-error-occurred-importing-the-selected-file-with-xml-contextobject
It is probably different, but it may have some useful information in it.

[windingwind]

Yes, definitely. If you can reproduce when all plugins are disabled (and be sure to restart Zotero before test), then please go direct to the forums.

I don't think this should go to dev list, since you are not a developer (and this is not something that related to plugin).

[windingwind]

And it's not related to the "found a fix" thread I believe. A debug ID and steps to reproduce would be enough.

[mjthoraval]

Done: https://forums.zotero.org/discussion/109677/zotero-7-beta-xml-parsing-error-no-root-element-found
Thank you.

[windingwind]

Seems like the problem is resolved in the thread above. Closed.