Getting the below error when sending message from mattermost channel
Hi buler and welcome to the Mattermost forums!
Can you please share the configuration of this outgoing webhook, the data you sent when you received the error and your Mattermost server version?
Ah turns out my ngrok had idled out, my bad ! Found this out while confirming the outgoing webhook config.
Thanks anyway 
Sometimes it just helps to talk about it 
Thanks for confirming that it works now again.