Workflow: Error Slack Send

{
    "nodes": [
        {
            "id": "eb305364-de39-4b9e-ad6e-eea54ebf712d",
            "name": "Slack",
            "type": "n8n-nodes-base.slack",
            "position": [
                740,
                300
            ],
            "parameters": {
                "text": "={{ $json.message }}",
                "select": "channel",
                "channelId": {
                    "__rl": true,
                    "mode": "name",
                    "value": "#alerts-n8n-workflows"
                },
                "otherOptions": []
            },
            "credentials": {
                "slackApi": {
                    "id": "26",
                    "name": "Cloudbot bot token"
                }
            },
            "typeVersion": 2.100000000000000088817841970012523233890533447265625
        },
        {
            "id": "9babcea6-ac7c-4a75-bd4c-f3d6a54c0ec7",
            "name": "On Error",
            "type": "n8n-nodes-base.errorTrigger",
            "position": [
                220,
                300
            ],
            "parameters": [],
            "typeVersion": 1
        },
        {
            "id": "134acca3-d4a7-485c-ab45-5a2721ed6a2c",
            "name": "Set message",
            "type": "n8n-nodes-base.set",
            "position": [
                480,
                300
            ],
            "parameters": {
                "values": {
                    "string": [
                        {
                            "name": "message",
                            "value": "=:warning: [prod] workflow `{{$json[\"workflow\"][\"name\"]}}` failed to run! <{{ $json.execution.url }}|execution>\n\nerror message from node: {{ $json.execution.lastNodeExecuted }}\n {{ $json.execution.error.message }}"
                        }
                    ]
                },
                "options": [],
                "keepOnlySet": true
            },
            "typeVersion": 1
        },
        {
            "id": "b6dfce1e-95c0-43c4-8a81-098b33130232",
            "name": "Sticky Note3",
            "type": "n8n-nodes-base.stickyNote",
            "position": [
                140,
                100
            ],
            "parameters": {
                "color": 5,
                "width": 424.49078626456611118555883876979351043701171875,
                "height": 154.7766688696993924168054945766925811767578125,
                "content": "### \ud83d\udc68\u200d\ud83c\udfa4 Setup\n1. Add Slack creds\n2. Add this error workflow to other workflows\nhttps:\/\/docs.n8n.io\/flow-logic\/error-handling\/#create-and-set-an-error-workflow"
            },
            "typeVersion": 1
        },
        {
            "id": "619e2628-6860-47ca-9e6a-9294ea123f8f",
            "name": "Sticky Note",
            "type": "n8n-nodes-base.stickyNote",
            "position": [
                480,
                480
            ],
            "parameters": {
                "width": 241,
                "height": 80,
                "content": "### \ud83d\udc46\ud83c\udffd Adjust error message here"
            },
            "typeVersion": 1
        }
    ],
    "pinData": [],
    "connections": {
        "On Error": {
            "main": [
                [
                    {
                        "node": "Set message",
                        "type": "main",
                        "index": 0
                    }
                ]
            ]
        },
        "Set message": {
            "main": [
                [
                    {
                        "node": "Slack",
                        "type": "main",
                        "index": 0
                    }
                ]
            ]
        }
    }
}