NextJS Deployment crashing with ERR_PNPM_NO_LOCKFILE

Question

Project ID: 31d9b86c-db7f-44b7-8a2b-6d81ce651e2a

Basically the same as https://help.railway.app/questions/deployment-of-next-js-project-has-suddenl-31fd443e and the other ERR_PNPM issue.

My project is crashing with:
```
1.881  ERR_PNPM_NO_LOCKFILE  Cannot install with "frozen-lockfile" because pnpm-lock.yaml is absent
```

I have tried:
❌ Using pnpm v8 by having this in my package.json:
```
"packageManager": "pnpm@8.10.0"
```
I actually never used v9.

❌  Using pnpm@latest as so:
```
"packageManager": "pnpm@latest"
```

This actually resulted in another error saying this format is invalid:
```
0.535 Usage Error: Invalid package manager specification in package.json (pnpm@latest); expected a semver version
```

❌ Trying both the V2 and the Legacy runtime

❌  Deleting/Regenrating node_modules and pnpm-lock.yaml

What can I do?