Merge pull request janhq#1398 from gabrielle-ong/main

docs: Troubleshoot Failed To Fetch

docs/docs/guides/07-troubleshooting/02-failed-to-fetch.mdx

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+---
+title: Failed To Fetch
+slug: /troubleshooting/failed-to-fetch
+description: Troubleshooting "Failed to Fetch"
+keywords:
+  [
+    Jan AI,
+    Jan,
+    ChatGPT alternative,
+    local AI,
+    private AI,
+    convZ
+    ersational AI,
+    no-subscription fee,
+    large language model,
+    troubleshooting,
+  ]
+---
+
+You may receive a "Error Occured: Failed to Fetch" response when you first start chatting with a selected model. 
+
+This may occur due to several reasons. Please follow these steps to resolve it:
+
+1. Ensure you are on the latest version of Mac, Windows or Ubuntu OS version
+    - Upgrading to the latest version has resolved this issue for most people
+
+2. Select a model that is smaller than 80% of your hardware V/RAM. 
+    - For example, if you have a 8GB machine, you should select models smaller than 6GB.
+
+3. Install the latest [Nightly release](https://jan.ai/install/nightly/)
+    - If you are re-installing Jan, it can help to [clear the application cache](https://jan.ai/troubleshooting/stuck-on-broken-build/)
+
+4.  Ensure your V/RAM is accessible by the application (some people have virtual RAM)
+
+5.  If you are on Nvidia GPUs, please download [Cuda](https://developer.nvidia.com/cuda-downloads)