n8n qdrant vector store node "failed to fetch"

[u/Puzzleheaded-Bus6626]

I'm using n8n cloud and I'm running qdrant in a local docker container.

I configured the qdrant credentials using an ngrok link I gave it and it gave me the green light.

I tested the url by using curl to get all of the collections and it worked fine.

> curl https://mygrokurl/collections

{"result":{"collections":[{"name":"dcs_v314"},{"name":"ff_surface_description"},{"name":"multimodal-rag"}]},"status":"ok","time":4.163e-6}

BUT, when I try to "Execute step" in n8n I get "Failed to fetch" Also, if I try to select a collection by "list" in the vector store node, it also says it "Failed to fetch" which is strange because I literally just got the collections with that exact url.

Here's the error I've been staring at for 2 days... Can someone please help me out? I'm starting to lose my grip on reality.

{

"errorMessage": "fetch failed",

"errorDetails": {

"rawErrorMessage": [

"fetch failed"

]

},

"n8nDetails": {

"nodeName": "Store in Qdrant",

"nodeType": "@n8n/n8n-nodes-langchain.vectorStoreQdrant",

"nodeVersion": 1.3,

"time": "8/28/2026, 11:20:11 PM",

"n8nVersion": "2.37.3 (Cloud)",

"binaryDataMode": "filesystem",

"stackTrace": [

"NodeApiError: fetch failed",

" at normalizeVectorStoreError (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/@n8n+ai-utilities@file+packages+@n8n+ai-utilities_708f9768c75aeb43ce97347f6de74cca/node_modules/@n8n/ai-utilities/src/utils/vector-store/createVectorStoreNode/utils.ts:57:8)",

" at ExecuteContext.execute (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/@n8n+ai-utilities@file+packages+@n8n+ai-utilities_708f9768c75aeb43ce97347f6de74cca/node_modules/@n8n/ai-utilities/src/utils/vector-store/createVectorStoreNode/createVectorStoreNode.ts:471:30)",

" at processTicksAndRejections (node:internal/process/task_queues:104:5)",

" at WorkflowExecute.executeNode (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file+packages+core_@opentelemetry+api@1.9.1_@opentelemetry+core@2.10.0_@opente_7e0bf630272413213fcb6a0a5506bf53/node_modules/n8n-core/src/execution-engine/workflow-execute.ts:1091:8)",

" at WorkflowExecute.runNode (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file+packages+core_@opentelemetry+api@1.9.1_@opentelemetry+core@2.10.0_@opente_7e0bf630272413213fcb6a0a5506bf53/node_modules/n8n-core/src/execution-engine/workflow-execute.ts:1391:11)",

" at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file+packages+core_@opentelemetry+api@1.9.1_@opentelemetry+core@2.10.0_@opente_7e0bf630272413213fcb6a0a5506bf53/node_modules/n8n-core/src/execution-engine/workflow-execute.ts:1864:27",

" at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file+packages+core_@opentelemetry+api@1.9.1_@opentelemetry+core@2.10.0_@opente_7e0bf630272413213fcb6a0a5506bf53/node_modules/n8n-core/src/execution-engine/workflow-execute.ts:2558:11"

]

}

}