Fatal error: "Operations that change non-concurrent collections must have exclusive access" (System.InvalidOperationException)

[laurence-myers]

I attempted to download all posts from a creator. I got up to "Downloaded 13343/13592" while downloading external images from googleusercontent, then I got this error message, and the app quit.

2022-07-17 18:26:27.6648 FATAL Fatal error, application will be closed: UniversalDownloaderPlatform.Engine.Exceptions.UniversalDownloaderPlatformException: Error while downloading https://c10.patreonusercontent.com/4/patreon-media/p/post/*redacted*/*redacted*/eyJwIjoxfQ%3D%3D/1.mp3?token-time=*redacted*&token-hash=*redacted*%3D&ext=.mp3: Operations that change non-concurrent collections must have exclusive access. A concurrent update was performed on this collection and corrupted its state. The collection's state is no longer correct.
 ---> System.InvalidOperationException: Operations that change non-concurrent collections must have exclusive access. A concurrent update was performed on this collection and corrupted its state. The collection's state is no longer correct.
   at System.Collections.Generic.Dictionary`2.FindValue(TKey key)
   at PatreonDownloader.Implementation.PatreonCrawledUrlProcessor.ProcessCrawledUrl(ICrawledUrl udpCrawledUrl, String downloadDirectory) in F:\Sources\BigProjects\PatreonDownloader\PatreonDownloader.Implementation\PatreonCrawledUrlProcessor.cs:line 207
   at UniversalDownloaderPlatform.Engine.DownloadManager.<>c__DisplayClass8_1.<<Download>b__0>d.MoveNext() in F:\Sources\BigProjects\PatreonDownloader\submodules\UniversalDownloaderPlatform\UniversalDownloaderPlatform.Engine\DownloadManager.cs:line 109
   --- End of inner exception stack trace ---
   at UniversalDownloaderPlatform.Engine.DownloadManager.<>c__DisplayClass8_1.<<Download>b__0>d.MoveNext() in F:\Sources\BigProjects\PatreonDownloader\submodules\UniversalDownloaderPlatform\UniversalDownloaderPlatform.Engine\DownloadManager.cs:line 109
--- End of stack trace from previous location ---
   at UniversalDownloaderPlatform.Engine.DownloadManager.Download(List`1 crawledUrls, String downloadDirectory, CancellationToken cancellationToken) in F:\Sources\BigProjects\PatreonDownloader\submodules\UniversalDownloaderPlatform\UniversalDownloaderPlatform.Engine\DownloadManager.cs:line 114
   at UniversalDownloaderPlatform.Engine.UniversalDownloader.Download(String url, String downloadDirectory, IUniversalDownloaderPlatformSettings settings) in F:\Sources\BigProjects\PatreonDownloader\submodules\UniversalDownloaderPlatform\UniversalDownloaderPlatform.Engine\UniversalDownloader.cs:line 204
   at PatreonDownloader.App.Program.RunPatreonDownloader(CommandLineOptions commandLineOptions) in F:\Sources\BigProjects\PatreonDownloader\PatreonDownloader.App\Program.cs:line 143
   at PatreonDownloader.App.Program.Main(String[] args) in F:\Sources\BigProjects\PatreonDownloader\PatreonDownloader.App\Program.cs:line 69

Options:

--descriptions --embeds --json --campaign-images --log-save --download-directory *redacted* --use-sub-directories