Hi there. I'm experiencing a problem where around 25% of my pdf attachments are not syncing with my web library on zotero.org (corresponding data seems to be OK).

The logs show that those attempted HTTP POSTs are throwing a status 500 error with an UnexpectedStatusException:

Error: HTTP POST https://api.zotero.org/users/6825322/items/2A6MT96Q/file failed with status code 500: An error occurred Error: HTTP POST https://api.zotero.org/users/6825322/items/2A6MT96Q/file failed with status code 500: An error occurred Zotero.HTTP</this.UnexpectedStatusException@chrome://zotero/content/xpcom/http.js:21:18

Zotero attempts to POST the data again (with incremental delays) so this causes the sync to take a very long time to complete. I can't seem to come up with a solution based on the log output on my end (and reviewing older posts in this forum) so I was wondering if you had any suggestions since this has been going on for about a week.

I've submitted my logs with Debug ID: **D1756818523**

Thanks in advance for any help you can provide with this!