Zotero won't open my database - Report ID 1570257354

Hi,
I used Zotero + LibreOffice as usual some hours ago, shut down the computer and, after resuming it, Zotero was not able to retrieve my database anymore. I got the message "an error has occured. Please restart Zotero", together with one for reporting the error. Restarting it - and the whole OS - is making no difference, as the same message appears again. I didn't use Zotero in other computer in the meantime (therefore there should be no sync conflicts). But I have it installed in another computer that I can use to recover my database (and I didn't open it yet since I've noticed the problem). Can anyone help me?
Report ID is 1570257354.
Thanks!
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