FastifyError: Plugin did not start in time: '@mcansh/remix-fastify'. You may have forgotten to call 'done' function or to resolve a Promise

[wong2]

Fastify: 5.4.0
@mcansh/remix-fastify: 4.1.1

My server code is exactly the same as the example in README, today I suddenly get this error when deploy in production.

[mcansh]

do you have any other set up instructions to try and reproduce? I just created a fresh app pnpx create-react-router@latest --template https://github.com/mcansh/remix-fastify/tree/dev/examples/react-router and updated everything to latest and all is well

[cosn]

it's flaky, I've also seen this happen, but not consistently (and in fact, rarely)

[gnsams]

Having the same problem (rarely)

[gnsams]

What I got is:

      const readyTimeoutErr = new AVV_ERR_PLUGIN_EXEC_TIMEOUT(name)
                              ^
FastifyError [Error]: Plugin did not start in time: '@mcansh/remix-fastify'. You may have forgotten to call 'done' function or to resolve a Promise
    at Timeout._onTimeout (/home/gabriel/*********/node_modules/avvio/lib/plugin.js:114:31)
    at listOnTimeout (node:internal/timers:588:17)
    at process.processTimers (node:internal/timers:523:7) {
  code: 'AVV_ERR_PLUGIN_EXEC_TIMEOUT',
  statusCode: 500,
  fn: <ref *1> [AsyncFunction (anonymous)] {
    default: [Circular *1],
    mcanshRemixFastify: [Circular *1],
    [Symbol(skip-override)]: true,
    [Symbol(fastify.display-name)]: '@mcansh/remix-fastify',
    [Symbol(plugin-meta)]: {
      name: '@mcansh/remix-fastify',
      fastify: '^3.29.0 || ^4.0.0 || ^5.0.0'
    }
  }
}

Node.js v22.15.0

[noahnu]

I am seeing this error as well on the latest version of @mcansh/remix-fastify, using:

import { reactRouterFastify } from '@mcansh/remix-fastify/react-router'

in a very simple app. I'll share my info if I can reproduce consistently.