Invalid or missing translator metadata JSON object in Die Zeit.js
You don't say what the problem is, but you're getting lots of errors about translators and styles, so you should start by resetting translators and styles from the Advanced → Files and Folders pane of the Zotero preferences.
If you have your Zotero data directory in a location other than the default — e.g., in a cloud storage folder — you should move it out immediately.
If you have your Zotero data directory in a location other than the default — e.g., in a cloud storage folder — you should move it out immediately.