"Invariant failed" on npm start

[mrkurt]

We're getting this error when on npm start after a migration command. I don't think there are more stack lines, though. Any idea if this is a misconfig or a bug of some kind?

```Preparing to run: sh start.sh as root
fra [info]+ npx prisma migrate deploy
Datasource "db": SQLite database "sqlite.db" at "file:/data/sqlite.db"
No pending migrations to apply.

• npm run start

start
remix-serve build
/myapp/node_modules/tiny-invariant/dist/tiny-invariant.cjs.js:10
throw new Error(prefix);
^
Error: Invariant failed
at invariant (/myapp/node_modules/tiny-invariant/dist/tiny-invariant.cjs.js:10:15)
at Object. (/myapp/build/index.js:443:35)
at Module._compile (node:internal/modules/cjs/loader:1103:14)
at Object.Module._extensions..js (node:internal/modules/cjs/loader:1157:10)
at Module.load (node:internal/modules/cjs/loader:981:32)
at Function.Module._load (node:internal/modules/cjs/loader:822:12)
at Module.require (node:internal/modules/cjs/loader:1005:19)
at require (node:internal/modules/cjs/helpers:102:18)

[netdesignr]

@mrkurt thanks for escalating this here. Still no success in overcoming this issue

[netdesignr]

@mrkurt ok, now that's weird. All fixed after I've tried rebuilding a couple of times. You might want to close this issue for now.

[brian-dlee]

I'm getting this same exact issue with a freshly created app from Indie stack when deploying to Fly.io. npm start works fine locally. If any has any suggestions I'm open. I imagine it's not Fly related. I've tried changing NPM versions between node:16 node:16-bullseye-slim and node:14 and tried upgrading NPM to the latest with in the Docker container since I figured it could be a minor package version resolution issue difference between my Mac and the linux container. The node:14 container had an issue with the npx prisma ... command in start.sh, so it's inconclusive whether or not that would have worked.

edit

I do get the same error when starting up the docker container and running npm start

root@dc0ccd1ec14b:/app# npm start

> start
> remix-serve build


/app/node_modules/tiny-invariant/dist/tiny-invariant.cjs.js:10
        throw new Error(prefix);
              ^
Error: Invariant failed
    at invariant (/app/node_modules/tiny-invariant/dist/tiny-invariant.cjs.js:10:15)
    at Object.<anonymous> (/app/build/index.js:146:35)
    at Module._compile (node:internal/modules/cjs/loader:1105:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1159:10)
    at Module.load (node:internal/modules/cjs/loader:981:32)
    at Function.Module._load (node:internal/modules/cjs/loader:822:12)
    at Module.require (node:internal/modules/cjs/loader:1005:19)
    at require (node:internal/modules/cjs/helpers:102:18)
    at Object.createApp (/app/node_modules/@remix-run/serve/index.js:39:12)
    at Object.<anonymous> (/app/node_modules/@remix-run/serve/cli.js:52:17)
root@dc0ccd1ec14b:/app#

[brian-dlee]

I found the issue for anyone else who happens upon this. invariant is used to check for SESSION_SECRET and I did not have a SESSION_SECRET secret defined in Fly. Lo and behold, the README outlines this step just fine.

[alifhaider]

What to do if I found this issue?

[machour]

@alifhaider you fill in a new issue with all details possible.