[BUG] Upload fails with InvalidOperationException

[LukasQ]

Hi there

I'm on windows11 and Slackord:latest and this pops up all the time. Restart or reconnect don't help
It is somehow random. If I retry in some channels, it's again working, others keep failing.

System.InvalidOperationException: Collection was modified; enumeration operation may not execute.
   at System.Collections.Generic.List`1.Enumerator.MoveNext()
   at Slackord.Classes.DiscordBot.PostMessagesToDiscord(UInt64 guildID, SocketInteraction interaction) in D:\GitHub Projects\Slackord\Slackord\Classes\DiscordBot.cs:line 293
   at Slackord.Classes.DiscordBot.SlashCommandHandler(SocketSlashCommand command) in D:\GitHub Projects\Slackord\Slackord\Classes\DiscordBot.cs:line 98
   at Discord.EventExtensions.InvokeAsync[T](AsyncEvent`1 eventHandler, T arg)
   at Discord.WebSocket.DiscordSocketClient.TimeoutWrap(String name, Func`1 action)```

[LukasQ]

Could it be the case that the deconstruction of larger channels take ages and, as it says, I try to push these in the ETL phase and thus to early?

That's the log msg while importing:

Parsing Users for import...
Successfully parsed 18 users.
Begin parsing JSON data for general with 705 JSON files...
This import appears to be quite large. Reconstructing will take a very long time and the UI may freeze until completed. Please be patient!
Deconstruction/Reconstruction process started...
Exception processing file canvas_in_the_conversation.json: DeconstructMessage(): Error processing property 'editor_id' with value '' in JSON
Completed importing channel general.


Deconstructing 8432 messages for general

and later

Deconstructing 8432 messages for general
Found 140 threads in general.
Reconstructed 8434 messages for general
ReconstructAsync(): Collection was modified; enumeration operation may not execute.

[LukasQ]

Yes, it's the case, I looked only to the progress bar, but not to the logs.
See: #106

[thomasloupe]

Tracking this, thanks very much for the detailed report! Have left this closed and am replying in #106 :)