[JavaScript Error: "Group with libraryID 1 does not exist" {file: "chrome://zotero/content/xpcom/data/groups.js" line: 108}]

document.documentElement.outerHTML in the Run JavaScript console to see the whole DOM for the document, though that wouldn't let you easily test new styles.

The collections (plural) an item appears in has no effect on its generated citekey, but if your question is "can I select multiple items, duplicate all of them in one go, and then remove these duplica

Yeah, you're getting a strange error: [JavaScript Error: "Unix error 1 during operation open on file /Users/[…]/Desktop/[…]/_Zotero Attachments/[…].pdf (Operation not permitted)"]

[JavaScript Error: "No tab with id: 1170721166."]

[JavaScript Error: "Win error 5 during operation removeEmptyDir on file C:\Users\Sean\Zotero\storage\MX4G4TPW (Access is denied.

Adding to my manual method above for finding locally stored PDFs (that I have omitted to have Zotfile move to my linked storage folder), I now use the code below run in Tools\Developer\Run Javascript.

While you're seeing this sort of memory usage, can you go to Tools → Developer → Run JavaScript, run Zotero.openInViewer('about:memory'), click "Measure and save…" under "Save memory reports",

[JavaScript Error: "No tab with id: 667509932."]

If you want to know which attachment PDF files in your local storage folder ARE in Zotero's database, this code run under Tools\Developer\Run Javascript should show you that list. As always, there may

[JavaScript Error: "TypeError: Cannot read properties of undefined (reading '163')

[JavaScript Error: "Error(s) encountered during statement execution: unable to open database file [QUERY: DROP TABLE IF EXISTS tmpSearchResults_Ww3xJop3] [PARAMS: ] [ERROR: unable to open database fil

[JavaScript Error: "C:\Program Files (x86)\Zotero\pdftotext.exe returned exit status 2" {file: "chrome://zotero/content/xpcom/utilities_internal.js" line: 756}]

[JavaScript Error: "Error(s) encountered during statement execution: FOREIGN KEY constraint failed [QUERY: INSERT OR REPLACE INTO itemTags (itemID, tagID, type) VALUES (?, ?, ?)] [PARAMS: 6428, 30370,

[JavaScript Error: "missing ( after for" {file: "chrome://zotero/content/xpcom/translation/translate_firefox.js" line: 168}]

The point of the first is just that SingleFile (and Zotero) removes JavaScript by default, for the reason explained in the FAQ. SingleFile can be configured to save scripts, but it makes for a terribl

[JavaScript Error: "Error processing feed from http://ifgga4881bd9324f14cd5sxvxnf6uqvc5k6oqk.fhaz.libproxy.ruc.edu.cn/knavi/rss/ZRBZ:

[JavaScript Error: "Only 0 translators present in cache. Resetting

Report ID: 416032335([JavaScript Error: "TypeError: Cannot read properties of undefined (reading '9')

[JavaScript Error: "NS_ERROR_FILE_TARGET_DOES_NOT_EXIST: Component returned failure code: 0x80520006 (NS_ERROR_FILE_TARGET_DOES_NOT_EXIST) [nsIFile.isDirectory]" {file: "chrome://zotero/content/xpcom/