Noah•2w ago

Convex Local Dev Deployments failing

Running Local Dev Deployments with npx convex dev --local --once sets the .env.local to localhost. But Convex cannot connect: ⠴ Fetch failed, is http://127.0.0.1:3210 correct? Retrying... It seems like the local instance isn't running. Same issue on the Convex Dashboard

8 Replies

Convex Bot•2w ago

Thanks for posting in <#1088161997662724167>. Reminder: If you have a Convex Pro account, use the Convex Dashboard to file support tickets. - Provide context: What are you trying to achieve, what is the end-user interaction, what are you seeing? (full error message, command output, etc.) - Use search.convex.dev to search Docs, Stack, and Discord all at once. - Additionally, you can post your questions in the Convex Community's <#1228095053885476985> channel to receive a response from AI. - Avoid tagging staff unless specifically instructed. Thank you!

sshader•2w ago

npx convex dev is the thing running the local deployment, so you need to keep that running (i.e. remove the --once) to be able to connect to it

NoahOP•2w ago

It's been running. Doesn't help, unfortunately.

➜  repo git:(main) ✗ npx convex dev --local
✔ Provisioned a local deployment and saved its:
    name as CONVEX_DEPLOYMENT to .env.local
    URL as NEXT_PUBLIC_CONVEX_URL to .env.local

Write your Convex functions in convex/
Give us feedback at https://convex.dev/community or support@convex.dev

⠧ Fetch failed, is http://127.0.0.1:3210 correct? Retrying...

➜  repo git:(main) ✗ npx convex dev --local
✔ Provisioned a local deployment and saved its:
    name as CONVEX_DEPLOYMENT to .env.local
    URL as NEXT_PUBLIC_CONVEX_URL to .env.local

Write your Convex functions in convex/
Give us feedback at https://convex.dev/community or support@convex.dev

⠧ Fetch failed, is http://127.0.0.1:3210 correct? Retrying...

Just tested it with a clean, new Convex app and it's not working either...

➜  my-app npx convex dev --local
? What would you like to configure? create a new project
? Team: noah-43fb2
? Project name: dsfsdfds
✔ Created project dsfsdfds in team noah-43fb2, manage it at https://dashboard.convex.dev/t/noah-43fb2/dsfsdfds
You're trying out the beta local deployment feature!
To learn more, read the docs: https://docs.convex.dev/cli/local-deployments
To opt out at any time, run `npx convex disable-local-deployments`
waiting for local backend to start...
✖ Local backend did not start on port 3210 within 10 seconds.
✖ Hit an error while running local deployment.
Your error has been reported to our team, and we'll be working on it.
To opt out, run `npx convex disable-local-deployments`. Then re-run your original command.

➜  my-app npx convex dev --local
? What would you like to configure? create a new project
? Team: noah-43fb2
? Project name: dsfsdfds
✔ Created project dsfsdfds in team noah-43fb2, manage it at https://dashboard.convex.dev/t/noah-43fb2/dsfsdfds
You're trying out the beta local deployment feature!
To learn more, read the docs: https://docs.convex.dev/cli/local-deployments
To opt out at any time, run `npx convex disable-local-deployments`
waiting for local backend to start...
✖ Local backend did not start on port 3210 within 10 seconds.
✖ Hit an error while running local deployment.
Your error has been reported to our team, and we'll be working on it.
To opt out, run `npx convex disable-local-deployments`. Then re-run your original command.

sshader•2w ago

Hmm. So a couple things you can do: * Can you check that you're running Node 18? (node --version) -- I think we've had issues around that in the past, but thought we fixed it to print a better error message * If that doesn't work, to get you unblocked, you can opt out (npx convex disable-local-deployments) and then you'll be running against a cloud deployment (which should definitely work)

NoahOP•2w ago

I'm on Node 22 (v22.12.0) Yeah, Cloud works great. But we'd love to get local working. We're using Devin.ai and want each Devin VM to have its own Convex environment. Local seems perfect for that. Will test with Node 18

sshader•2w ago

Ah gotcha. Hopefully Node 18 helps -- there's also some changes in the pipeline that might make it easier to spin up a local backend from the CLI

NoahOP•2w ago

Works now on Node 18, thanks for the help! Would have apreciated some clearer guidance on this in the doc page for Local Deployment. How I understood it, only the projects "use node" directives rely on Node 18. But it seems like any local deployment needs Node 18

sshader•2w ago

Yeah looks like this is a regression (both that now every project requiring Node 18 + there being no good error message), so thank you for raising it. Looking into fixing that now

Convex Local Dev Deployments failing

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