Slack: IML Error with getBlocksData

[MaxW]

Trying to send a Slack message, but I am getting the following error:

Here is the Slack module blocks data:

{
	"blocks": [
		{
			"type": "header",
			"text": {
				"type": "plain_text",
				"text": "Positive response in Smartlead!"
			}
		},
		{
			"type": "divider"
		},
		{
			"type": "section",
			"fields": [
				{
					"type": "mrkdwn",
					"text": "*First & Last Name:*\n{{6.lead_data.first_name}}{{6.lead_data.last_name}}"
				},
				{
					"type": "mrkdwn",
					"text": "*Email:*\n{{6.lead_data.email}}"
				},
				{
					"type": "mrkdwn",
					"text": "*Company:*\n{{6.lead_data.company_name}}"
				},
				{
					"type": "mrkdwn",
					"text": "*Website:*\n{{6.lead_data.website}}"
				},
				{
					"type": "mrkdwn",
					"text": "*Source Campaign:*\n{{6.campaign_name}}"
				},
				{
					"type": "mrkdwn",
					"text": "*Smartlead URL:* <{{6.app_url}}|Go To Inbox>"
				}
			]
		},
		{
			"type": "divider"
		},
		{
			"type": "section",
			"text": {
				"type": "mrkdwn",
				"text": "*Email Thread:*"
			}
		},
		{
			"type": "section",
			"text": {
				"type": "mrkdwn",
				"text": "```{{stripHTML(6.last_reply.email_body)}}```"
			}
		}
	]
}

Here’s a typical email:

The scenario is a WIP, so trying to debug this stage of the scenario so I can continue.

[MaxW]

Update, so I tried a few things and figured out it was the last blocks entry. It looks like it needs to be in a specific JSON format?

Here’s my setup, please let me know if this is correct or not:

The goal is the client wants to output body text as a code block in a slack message.

This is how it displays in my Slack test: