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Having repeatedly seen that users are unaware of the meaning of the EADDRINUSE error message (see, for example, this [forum thread](https://forum.magicmirror.builders/topic/19871/update-package-list/5)), I thought we should intercept this message and provide clearer output. This may help users identify the cause of the problem more quickly themselves. ## before ``` [2025-09-13 09:54:32.903] [LOG] Starting MagicMirror: v2.33.0-develop ... [2025-09-13 09:54:33.533] [LOG] Starting server on port 8080 ... [2025-09-13 09:54:33.537] [WARN] You're using a full whitelist configuration to allow for all IPs [2025-09-13 09:54:33.568] [ERROR] Whoops! There was an uncaught exception... [2025-09-13 09:54:33.574] [ERROR] Error: listen EADDRINUSE: address already in use 0.0.0.0:8080 at Server.setupListenHandle [as _listen2] (node:net:1940:16) at listenInCluster (node:net:1997:12) at node:net:2206:7 at process.processTicksAndRejections (node:internal/process/task_queues:90:21) { code: 'EADDRINUSE', errno: -98, syscall: 'listen', address: '0.0.0.0', port: 8080 } [2025-09-13 09:54:33.574] [ERROR] MagicMirror² will not quit, but it might be a good idea to check why this happened. Maybe no internet connection? [2025-09-13 09:54:33.574] [ERROR] If you think this really is an issue, please open an issue on GitHub: https://github.com/MagicMirrorOrg/MagicMirror/issues [2025-09-13 09:54:35.235] [INFO] #### System Information #### ... ``` ## after ``` [2025-09-13 09:53:20.151] [LOG] Starting MagicMirror: v2.33.0-develop ... [2025-09-13 09:53:20.928] [LOG] Starting server on port 8080 ... [2025-09-13 09:53:20.931] [WARN] You're using a full whitelist configuration to allow for all IPs [2025-09-13 09:53:20.970] [ERROR] ──────────────────────────────────────────────────────────────── PORT IN USE: 0.0.0.0:8080 Another process (most likely another MagicMirror instance) is already using this port. Stop the other process (free the port) or use a different port. ──────────────────────────────────────────────────────────────── [2025-09-13 09:53:22.471] [INFO] #### System Information #### ... ```