DNS Errors After Updating to n8n 1.77.2 (Self-Hosted on Contabo)

Describe the problem/error/question

I’m having an issue with my n8n

I’m using n8n in self-hosted mode and queue mode on Contabo as the VPS host. However, after updating to version 1.77.2, n8n started showing some DNS errors.

Here is a screenshot of the error.

How can I fix this?

Note: Several workflows started failing, including some HTTP request nodes and PostgreSQL nodes, all showing the same DNS error.

What is the error message (if any)?

Node Postgres:


Node HTTP Request

Executions

Information on your n8n setup

  • n8n version: 1.77.2
  • Database (default: SQLite): PostgresDB
  • n8n EXECUTIONS_PROCESS setting (default: own, main): queue
  • Running n8n via (Docker, npm, n8n cloud, desktop app): Docker
  • Operating system: Ubuntu 20