Syntax error in BODY. Unexpected token: ')'

Describe the bug

Hello. I have an old email with a reminder for a certain date sent using Gmail, once there was a normal email with an HTML body, but now for some reason it has disappeared and only the attached files remain.

When trying to execute folder.FetchAsync with fetchRequest(Message Summary Items.Full | Message Summary Items.UniqueId | MessageSummaryItems.PreviewText) an exception occurs (MessageSummaryItems.PreviewText).

C: A00000007 FETCH 56 (UID FLAGS INTERNALDATE RFC822.SIZE ENVELOPE BODYSTRUCTURE BODY.PEEK[HEADER.FIELDS (REFERENCES)])
S: * 56 FETCH (UID 683 FLAGS (\Seen $NotJunk NotJunk) INTERNALDATE "22-Oct-2020 11:42:46 +0000" RFC822.SIZE 3285 ENVELOPE ("Thu, 22 Oct 2020 14:42:46 +0300" "Accepted: Invitation: =?utf-8?Q?=D0=9F=D0=BE=D0=B2=D1=82=D0=BE=D1=80=D0=?=@ Wed Jan 13, 2021 15:00 - 16:00 ([e-mail])" ((NIL NIL "test" "test.space")) ((NIL NIL "test" "test.space")) ((NIL NIL "test" "test.space")) ((NIL NIL "test" "gmail.com")) NIL NIL NIL "<4054e02d-184d-48ea-a42c-1a7ce1afd22a@Spark>") BODYSTRUCTURE ((("text" "plain" ("charset" "utf-8") NIL NIL "7bit" 0 1 NIL ("inline" ("filename" "")) NIL NIL)(("text" "html" ("charset" "utf-8") NIL NIL "quoted-printable" 0 1 NIL ("inline" ("filename" "")) NIL NIL)("text" "calendar" ("charset" "utf-8") "<B4A0A860187D44DA8891F5C7997A690A>" NIL "quoted-printable" 716 20 NIL ("inline" ("filename" "")) NIL NIL) "related" ("boundary" "5f91703b_238e1f29_1e8") NIL NIL NIL) "alternative" ("boundary" "5f91703b_46e87ccd_1e8") NIL NIL NIL)("application" "ics" NIL NIL NIL "base64" 772 NIL ("attachment" ("filename" "reply.ics")) NIL NIL) "mixed" ("boundary" "5f91703b_3d1b58ba_1e8") NIL NIL NIL) BODY[HEADER.FIELDS (REFERENCES)] {2}
S: 
S: )
S: A00000007 OK FETCH Completed.
C: A00000008 UID FETCH 683 (BODY.PEEK[1.1]<0.512>)
S: * 56 FETCH (UID 683 BODY[1.1]<0> )
S: A00000008 OK UID FETCH Completed.

Exception

Unhandled exception. MailKit.Net.Imap.ImapProtocolException: Syntax error in BODY. Unexpected token: ')'
   at MailKit.Net.Imap.ImapFolder.FetchStreamAsync(ImapEngine engine, ImapCommand ic, Int32 index, Boolean doAsync)
   at MailKit.Net.Imap.ImapEngine.ProcessUntaggedResponseAsync(Boolean doAsync, CancellationToken cancellationToken)
   at MailKit.Net.Imap.ImapCommand.StepAsync(Boolean doAsync)
   at MailKit.Net.Imap.ImapEngine.IterateAsync(Boolean doAsync)
   at MailKit.Net.Imap.ImapEngine.RunAsync(ImapCommand ic, Boolean doAsync)
   at MailKit.Net.Imap.ImapFolder.FetchPreviewTextAsync(FetchSummaryContext sctx, Dictionary`2 bodies, Int32 octets, Boolean doAsync, CancellationToken cancellationToken)
   at MailKit.Net.Imap.ImapFolder.GetPreviewTextAsync(FetchSummaryContext sctx, Boolean doAsync, CancellationToken cancellationToken)
   at MailKit.Net.Imap.ImapFolder.FetchAsync(Int32 min, Int32 max, IFetchRequest request, Boolean doAsync, CancellationToken cancellationToken)
   at Test.Imap.Clients.BaseClient.Run() in /root/BaseClient.cs:line 57
   at Test.Imap.Services.InboxService.Start(ImapOptions options) in /root/Services/test.cs:line 29
   at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__128_1(Object state)
   at System.Threading.QueueUserWorkItemCallback.<>c.<.cctor>b__6_0(QueueUserWorkItemCallback quwi)
   at System.Threading.ExecutionContext.RunForThreadPoolUnsafe[TState](ExecutionContext executionContext, Action`1 callback, TState& state)
   at System.Threading.QueueUserWorkItemCallback.Execute()
   at System.Threading.ThreadPoolWorkQueue.Dispatch()
   at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart()
   at System.Threading.Thread.StartCallback()

Platform (please complete the following information):

• OS: MacOS
• .NET Runtime: CoreCLR
• .NET Framework: net6.0
• MailKit Version: 3.4.0

[TheSuunny]

@jstedfast Yes, everything works fine. Thank you 😃

[jstedfast]

Try the latest build from https://www.myget.org/feed/mimekit/package/nuget/MailKit and see if that works