Zotero automatically deletes files

Frequently open zotero and find that the added files/categories as well as notes often disappear inexplicably (revert to the state a few days ago).
At first, I thought it was an automatic update problem, but after turning it off, it was still like this.Later, I suspected that it was the computer's fault, and then I modified the save path of Zotero on OneDrive.But this morning, OneDrive prompted me that some files had been cleared (I wasn't using a computer at that time), and I clicked in and found out that it was a newly added document.

Is this an indication that zotero is automatically deleting files? Is there any solution?
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