ZoteroQuickLook JavaScriptError

Fehlerbericht 1002951900
ZoteroQuickLook installed as specified, QuickLook also, changed the entry in the config file. Nothing happens
The error message [JavaScript Error: 'TypeError: Zotero.ZoteroQuickLook is undefined' {file: 'chrome: //zotero/content/standalone/standalone.xul' line: 1}]
oncommand @ chrome: //zotero/content/standalone/standalone.xul: 1: 1
Is there a way to fix the error?
Thank you!
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