Cannot send notifications through discord with json

[xinsodev]

I config Discord service with url:
WATCHTOWER_NOTIFICATION_URL: "discord://${DISCORD_WEBHOOK_TOKEN}@${DISCORD_WEBHOOK_ID}?json=true"

Then I got this error:
level=error msg="Failed to send shoutrrr notification" error="failed to send discord notification: response status code 400 Bad Request" index=0 notify=no service=discord

But if I remove ?json=true from the URL, the notification is successfully sent to the Discord channel.

I tried replacing json=true with splitlines=false, and it worked fine.

It seems that some query parameters are not functioning correctly.

[piksel]

The json argument means that it should directly send the template output to the API (which then needs to be correct JSON). What is it you want to accomplish?

[xinsodev]

I want to display like last message in the image.

[piksel]

Try adding ``` around the messages in the watchtower template. You can probably get it to work using the json param and a carefully crafted template according to the discord docs, but it seems like a lot of work.