Loop suddenly stopped working

[Dmappel]

Describe the problem/error/question

Loop suddenly stopped working. Everything was fine before, but now it won’t run.

Split Out sends three elements to еру Loop, but ше only processes the first one and then stops.

What could be the reason, and how can I get it working again?

What is the error message (if any)?

Please share your workflow

Share the output returned by the last node

Information on your n8n setup

• n8n version: 1.81.4
• Database (default: SQLite):
• n8n EXECUTIONS_PROCESS setting (default: own, main):
• Running n8n via (Docker, npm, n8n cloud, desktop app): Docker
• Operating system: Ubuntu

[Dmappel]

UPD: Interesting—if I remove all the nodes inside the Loop, it still runs three times. Please help.

[Dmappel]

Further debugging showed that the Loop stops when adding the Execute Sub-flow node. After processing the first item, it doesn’t continue.

[Alex_Huang]

Could you pin the data on the form node, then I’ll help check the issue

[BramKn]

The data is not returning to the loop node. So it doesnt continue its loop.
You should be able to easily spot the issue as the line after a node will be grey instead of green. (and doed have a green input)
Then u know which node is not returning data and stopping the flow.