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+---
+title: Undefined Issue
+slug: /troubleshooting/undefined-issue
+description: Undefined issue troubleshooting guide.
+keywords:
+  [
+    Jan AI,
+    Jan,
+    ChatGPT alternative,
+    local AI,
+    private AI,
+    conversational AI,
+    no-subscription fee,
+    large language model,
+    troubleshooting,
+    undefined issue,
+  ]
+---
+
+You may encounter an "undefined" issue when using Jan. Here are some troubleshooting steps to help you resolve the issue.
+
+1. Try wiping the Jan folder and reopening the Jan app and see if the issue persists.
+2. If the issue persists, try to go `~/jan/extensions/@janhq/inference-nitro-extensions/dist/bin/<your-os>/nitro` and run the nitro manually and see if you get any error messages.
+3. Resolve the error messages you get from the nitro and see if the issue persists.
+4. Reopen the Jan app and see if the issue is resolved.
+5. If the issue persists, please share with us the [app logs](https://jan.ai/troubleshooting/how-to-get-error-logs/) via [Jan Discord](https://discord.gg/mY69SZaMaC).