Add a note about local ollama connection troubleshooting. (#2749)

docs/integrations/builtin/credentials/ollama.md

@@ -34,7 +34,7 @@ To configure this credential, you'll need:
 
 - The **Base URL** of your Ollama instance.
 
-The default **Base URL** is `http://localhost:11434`, but if you've set the `OLLAMA_HOST` environment variable, enter that value.
+The default **Base URL** is `http://localhost:11434`, but if you've set the `OLLAMA_HOST` environment variable, enter that value. If you have issues connecting to a local n8n server, try `127.0.0.1` instead of `localhost`.
 
 Refer to [How do I configure Ollama server?](https://github.com/ollama/ollama/blob/main/docs/faq.md#how-do-i-configure-ollama-server){:target=_blank .external-link} for more information.