Bot crashes if it receives ANY forwarded message

[horouuu]

Details

Modmail v3.8.0 (6dd7e4a)

Description & Reproducing the Bug

As the title says, when you forward ANY message, the bot crashes.

Edited after further examination: I am able to force my server's bot to crash just by forwarding a message to it. It does not crash when attempting to recover forwarded messages, but every new forwarded message will crash the bot.

Stacktrace

On new forwarded message:

Error: Error: Invalid channel ID: undefined
    at Client.getChannel (C:\Users\Horou\Documents\GitHub\-\node_modules\eris\lib\Client.js:2447:13)
    at new Message (C:\Users\Horou\Documents\GitHub\-\node_modules\eris\lib\structures\Message.js:65:33)
    at C:\Users\Horou\Documents\GitHub\-\node_modules\eris\lib\structures\Message.js:94:21
    at Array.map (<anonymous>)
    at new Message (C:\Users\Horou\Documents\GitHub\-\node_modules\eris\lib\structures\Message.js:85:54)
    at Shard.wsEvent (C:\Users\Horou\Documents\GitHub\-\node_modules\eris\lib\gateway\Shard.js:948:38)
    at Shard.onPacket (C:\Users\Horou\Documents\GitHub\-\node_modules\eris\lib\gateway\Shard.js:398:16)
    ...stack trace truncated to 8 lines

On recovery:

Error: Invalid channel ID: undefined
    at Client.getChannel (C:\Users\Horou\Documents\GitHub\-\node_modules\eris\lib\Client.js:2447:13)
    at new Message (C:\Users\Horou\Documents\GitHub\-l\node_modules\eris\lib\structures\Message.js:65:33)
    at C:\Users\Horou\Documents\GitHub\-\node_modules\eris\lib\structures\Message.js:94:21
    at Array.map (<anonymous>)
    at new Message (C:\Users\Horou\Documents\GitHub\-\node_modules\eris\lib\structures\Message.js:85:54)
    at C:\Users\Horou\Documents\GitHub\-\node_modules\eris\lib\Client.js:2993:16
    at Array.map (<anonymous>)
    at Client.getMessages (C:\Users\Horou\Documents\GitHub\-\node_modules\eris\lib\Client.js:2991:21)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
    at async Thread.recoverDowntimeMessages (C:\Users\Horou\Documents\GitHub\-\src\data\Thread.js:1215:21)
    at async Client.<anonymous> (C:\Users\Horou\Documents\GitHub\-\src\main.js:90:11)

Notes

I think this is probably a byproduct of the new forwarded message functionality. Regardless, it isn't hard to patch out on our side, but I thought I'd let you know that a crtiical bug may exist.

Upon further inspection, this seems to be a bug inside the Eris message listener. If it tries to create a new Message object with a forwarded message, it'll end up throwing a chain of errors which crashes the process.

[itskdog]

Duplicate of #812?