Nuxt•4mo ago

I'm getting a weird error with no line numbers or trace when starting dev server

error: unknown command '_dev' How can I get more debug/trace information about where this is coming from?

2 Replies

Hi @bnason. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- To get more debug or trace information when encountering errors like error: unknown command '_dev' in Nuxt, you have several options: 1. Enable Debug Mode
Set the debug option to true in your nuxt.config file. This will print out hook names, timings, and log hook arguments, which can help you trace where the error is coming from:

   export default defineNuxtConfig({
     debug: true
   })

   export default defineNuxtConfig({
     debug: true
   })

This can also be set to an object for more specific debug options.
See the debug option documentation. 2. Use Sourcemaps
Ensure sourcemaps are enabled for both server and client builds. This can help you get more meaningful stack traces:

   export default defineNuxtConfig({
     sourcemap: {
       server: true,
       client: true
     }
   })

   export default defineNuxtConfig({
     sourcemap: {
       server: true,
       client: true
     }
   })

More on sourcemaps and debugging. 3. Run with Node Inspector
Start your dev server with the Node inspector to attach a debugger:

   nuxt dev --inspect

   nuxt dev --inspect

This allows you to use Chrome DevTools or your IDE to step through the code and catch where the error is thrown. 4. Debugging in Your IDE
Set up your IDE (like VS Code or JetBrains IDEs) for debugging. Example configurations are provided in the documentation and allow you to set breakpoints and inspect variables during execution.
See IDE debug configuration examples. If after enabling these options you still do not get a useful stack trace, the error may be coming from a misconfiguration or a third-party module. Double-check your nuxt.config and installed modules for any typos or unsupported commands. If you need to pass additional logging options, you can also use the --logLevel flag with nuxt dev:

npx nuxt dev --logLevel=verbose

npx nuxt dev --logLevel=verbose

This will increase the verbosity of the logs and may provide more context about the error. If none of these approaches reveal the source of the error, the knowledge sources do not provide further troubleshooting steps for this specific message. In that case, consider sharing your configuration and command history for more targeted help from the community. References:
Debug mode, Sourcemaps and debugging, nuxt dev command options ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•4mo ago

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I'm getting a weird error with no line numbers or trace when starting dev server

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