Hey all!
We've got a team digging into what's causing the 'Hmm. Something went wrong' error when attempting to send a Message. Once I've heard more from the team I'll update this thread.
When testing out this issue, I noticed that this was only impacting Messages sent via the Orders & Shipping page. If you head over to the Messages page, you should be able to send one successfully at this time.
Thanks!
We've found the cause of this issue and the team is working on a fix as I type this. Once it's live, I'll drop an update in this thread!
And the fix is live! You should be able to send a Message via the Orders & Shipping page without error at this time.
Thanks!