API integrations not working for Notion and Slack

Describe the problem/error/question

When adding a API secret, both for Notion and Slack, n8n wouldn’t retrieve any info from the platforms.

What is the error message (if any)?

It wouldn’t load the list of channels on Slack, not see the pages on Notion.

Thanks!

Please share your workflow

{
“nodes”: [
{
“parameters”: {
“trigger”: [
“message”
],
“channelId”: {
“__rl”: true,
“mode”: “list”,
“value”: “”
},
“options”: {}
},
“type”: “n8n-nodes-base.slackTrigger”,
“typeVersion”: 1,
“position”: [
0,
0
],
“id”: “464fa4ee-619d-43ed-8c5d-a69e72531295”,
“name”: “Slack Trigger”,
“webhookId”: “260e3da7-e571-4548-9396-cf045285edfe”,
“credentials”: {
“slackApi”: {
“id”: “uG70Ui4sWFB9HLwo”,
“name”: “Slack account”
}
}
}
],
“connections”: {},
“pinData”: {},
“meta”: {
“templateCredsSetupCompleted”: true,
“instanceId”: “e27d543c88e1d4605fdb591899fc7174091552e6b847e4191d16c7f717587b08”
}
}

(Select the nodes on your canvas and use the keyboard shortcuts CMD+C/CTRL+C and CMD+V/CTRL+V to copy and paste the workflow.)

Share the output returned by the last node

Information on your n8n setup

  • n8n version:
  • Database (default: SQLite):
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • Running n8n via (Docker, npm, n8n cloud, desktop app):
  • Operating system:
  • n8n version:
    I use the browser version
  • Database (default: SQLite):
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
    No idea.
  • Running n8n via (Docker, npm, n8n cloud, desktop app):
    Not sure… n8n clooud, I think.
  • Operating system:
    MacOs Sequoia 15.5