Error: Failed to resolve "/dev". To fix this error, add "/dev" to "dependencies" in your package.json file.
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Error: Failed to resolve "/dev". To fix this error, add "/dev" to "dependencies" in your package.json file.
Is @remix-run/dev in the package.json file devDependencies?
Yes its in both package.json.
Why is remix/dev needed in prodution?
The @remix-run/dev package contains the Remix CLI, so you wouldn't want to deploy it to production.
Instead, if you're using latest for @remix-run, you would have these in your package.json's dependencies section for a "production" deployment:
"@remix-run/node": "^2.12.1","@remix-run/react": "^2.12.1","@remix-run/serve": "^2.12.1",I'm curious as to why you're seeing the error itself stating you need to add the @remix-run/dev to your dependencies though 
. What were you doing when that error cropped up?
I was deploying the app to Vercel. Not sure why its asking for /dev when I am doing a deployment.
Here is my package.json
{ "name": "customer-portal", "private": true, "sideEffects": false, "type": "module", "scripts": { "build": "NODE_ENV=production remix build", "dev": "PORT=51580 remix dev --manual", "lint": "eslint --ignore-path .gitignore --cache --cache-location ./node_modules/.cache/eslint .", "start": "NODE_ENV=production POYNT_URL='https://poynt.net/snippet/poynt-collect/bundle.js' POYNT_APP_ID='urn:aid:df5ae5f0-6360-4024-819f-b7a17b92d5c7' node server.js", "typecheck": "tsc" }, "dependencies": { "@elastic/elasticsearch": "^8.12.2", "@remix-run/css-bundle": "^2.5.1", "@remix-run/node": "^2.12.1", "@remix-run/react": "^2.12.1", "@remix-run/serve": "^2.12.1", "dotenv": "^16.4.5", "is-ip": "^5.0.1", "isbot": "^4.1.0", "react": "^18.2.0", "react-code-input": "^3.10.1", "react-dom": "^18.2.0", "react-hook-mask": "^1.1.18", "react-signature-pad-wrapper": "^3.4.0", "remix-utils": "^7.5.0" }, "devDependencies": { "@remix-run/node": "^2.12.1", "@remix-run/react": "^2.12.1", "@remix-run/server-runtime": "^2.12.1", "@types/react": "^18.2.20", "@types/react-dom": "^18.2.7", "@typescript-eslint/eslint-plugin": "^6.7.4", "eslint": "^8.38.0", "eslint-config-prettier": "^9.0.0", "eslint-import-resolver-typescript": "^3.6.1", "eslint-plugin-import": "^2.28.1", "eslint-plugin-jsx-a11y": "^6.7.1", "eslint-plugin-react": "^7.33.2", "eslint-plugin-react-hooks": "^4.6.0", "tailwindcss": "^3.4.1", "typescript": "^5.1.6" }, "engines": { "node": ">=20.0.0" } }
I don't see @remix-run/dev in your devDependencies. However, I came across Remix's changelog referring to this -- it looks like a fix was made: changelog#v241.
"avoid issues where
@remix-run/devcould be inadvertently required in your server's production dependencies"
Could you make sure you're using @remix-run/dev@2.4.1 or greater in your devDependencies? Otherwise, without seeing the codebase itself, it will be quite challenging to determine what's causing this error to crop up during deployment.