Error report: 371650348

After importing a library from EndNote, when I sync my library or capture a reference in Chrome I receive the following error message. Any assistance is appreciated

[JavaScript Error: "Error 500 for item CGG4KZ6S in My Library:

ZoteroObjectUploadError: An error occurred"]

[JavaScript Error: "An error occurred" {file: "chrome://zotero/content/xpcom/sync/syncEngine.js" line: 1357}]

[JavaScript Error: "Error 500 for item 6729F7P3 in My Library:

ZoteroObjectUploadError: An error occurred"]

[JavaScript Error: "An error occurred" {file: "chrome://zotero/content/xpcom/sync/syncEngine.js" line: 1357}]

[JavaScript Error: "Error 500 for item QQ3V75RA in My Library:

ZoteroObjectUploadError: An error occurred"]

[JavaScript Error: "An error occurred" {file: "chrome://zotero/content/xpcom/sync/syncEngine.js" line: 1357}]

[JavaScript Error: "Made no progress during upload -- stopping" {file: "chrome://zotero/content/xpcom/sync/syncEngine.js" line: 1416}]

[JavaScript Error: "Made no progress during upload -- stopping" {file: "chrome://zotero/content/xpcom/sync/syncEngine.js" line: 1416}]

version => 6.0.15, platform => Win32, oscpu => Windows NT 10.0; WOW64, locale => en-US, appName => Zotero, appVersion => 6.0.15, extensions => Notero (0.3.5, extension), Zotero LibreOffice Integration (6.0.2.SA.6.0.15, extension), Zotero Word for Windows Integration (6.0.1.SA.6.0.15, extension), ZotFile (5.1.2, extension), Better BibTex for Zotero (6.7.28, extension)
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