Upgrade StorageReport ID: 300755987 (Zotero restart required)
I just upgraded to Zotero 5.0.17 on my mac (running macOS 10.12.6) and I got a message that an error had happened and I should restart Zotero. I submitted the error report. I don't have a way of reproducing the error at this point since the error seemed to be a bit random.