why,what is wrong?
                    错误报告:570205786
[error output removed — D.S.]
[JavaScript Error: "连接至服务器时发生错误。请检查网络连接。"]
[JavaScript Error: "连接至服务器时发生错误。请检查网络连接。"]
[JavaScript Error: "Request timed out"]
[JavaScript Error: "Request timed out"]
version => 6.0.16, platform => Win32, oscpu => Windows NT 10.0; WOW64, locale => zh-CN, appName => Zotero, appVersion => 6.0.16, extensions => Jasminum (0.1.8, extension), ZotFile (5.1.1, extension), Sci-Hub Plugin for Zotero (1.4.4, extension), Zotero IF (1.4.6, extension), Zotero PDF Translate (0.8.25, extension), Zotero LibreOffice Integration (6.0.3.SA.6.0.16, extension), Zotero Word for Windows Integration (6.0.2.SA.6.0.16, extension)
                            [error output removed — D.S.]
[JavaScript Error: "连接至服务器时发生错误。请检查网络连接。"]
[JavaScript Error: "连接至服务器时发生错误。请检查网络连接。"]
[JavaScript Error: "Request timed out"]
[JavaScript Error: "Request timed out"]
version => 6.0.16, platform => Win32, oscpu => Windows NT 10.0; WOW64, locale => zh-CN, appName => Zotero, appVersion => 6.0.16, extensions => Jasminum (0.1.8, extension), ZotFile (5.1.1, extension), Sci-Hub Plugin for Zotero (1.4.4, extension), Zotero IF (1.4.6, extension), Zotero PDF Translate (0.8.25, extension), Zotero LibreOffice Integration (6.0.3.SA.6.0.16, extension), Zotero Word for Windows Integration (6.0.2.SA.6.0.16, extension)
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https://www.zotero.org/support/reporting_problems#provide_steps_to_reproduce