Level 1: Exercises that don't work

{
“name”: “NatanWorkflow”,
“nodes”: [
{
“parameters”: {},
“type”: “n8n-nodes-base.manualTrigger”,
“typeVersion”: 1,
“position”: [
0,
0
],
“id”: “eb2ac4ed-2332-430a-a958-0141a4e380a2”,
“name”: “When clicking ‘Test workflow’”
},
{
“parameters”: {
“url”: “n8n Course Redirect”,
“authentication”: “genericCredentialType”,
“genericAuthType”: “httpHeaderAuth”,
“sendHeaders”: true,
“headerParameters”: {
“parameters”: [
{
“name”: “unique_id”,
“value”: “1b28e6f7b303a7849552d90737fa7af3”
}
]
},
“options”: {}
},
“type”: “n8n-nodes-base.httpRequest”,
“typeVersion”: 4.2,
“position”: [
220,
0
],
“id”: “e1e8257b-67ea-446d-ab83-8dfbe24253d0”,
“name”: “HTTP Request”,
“credentials”: {
“httpHeaderAuth”: {
“id”: “Ps0arlutFpmFe484”,
“name”: “Header Auth account”
}
}
}
],
“pinData”: {
“When clicking ‘Test workflow’”: [
{
“json”: {}
}
]
},
“connections”: {
“When clicking ‘Test workflow’”: {
“main”: [
[
{
“node”: “HTTP Request”,
“type”: “main”,
“index”: 0
}
]
]
}
},
“active”: false,
“settings”: {
“executionOrder”: “v1”
},
“versionId”: “60758662-f016-4ef7-aa51-5b4047ad7262”,
“meta”: {
“instanceId”: “b8e86c9ebb32c78d5874fbd0a3b298414275d327a4963731332acb598cda54ff”
},
“id”: “Nd51hihoQgFtcjjQ”,
“tags”:
}

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I found the problem; I had entered the wrong URL in the HTTP request node. Thanks.