The error report on one step update says that it can't get results for a security "0".
Found at:
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The 'error report' problem is a very old bug.
The report correctly notes that some securities prices were not downloaded, but it incorrectly identifies which securities those were.
The user must check the security prices individually (Investing > Portfolio with the securities grouped by 'Security' can help) to determine which ones were not downloaded, then decide whether to keep those securities selected for the price download. Once all the securities whose prices are unavailable are removed from the download, the 'error report' will no longer appear.
[And the old way to remove unmatched transactions from the Match dialog for downloaded transactions was removed by Intuit many years ago ... intentionally. At the time, Intuit, said they did not intend to restore the capability and I've read nothing about Quicken planning to restore it.]