[JavaScript Error: "Download request 1/T664FFMV failed"]
[JavaScript Error: "Win error 32 during operation removeEmptyDir on file D:\zotera\storage\T664FFMV (另一个程序正在使用此文件，进程无法访问。

You'd need to say exactly what the problem is, but if you're referring to a file-sync error, this error suggests that you have a file open on your computer. Try closing other programs (e.g., PDF readers) or restarting your computer. It could also potentially be caused by security software on your system interfering with Zotero.