Missing package.json in many folders while migrating from shopify app 2.0 to 3.0

[logistiq-123]

While we were trying to migrate our shopify app from 2.0 to 3.0, there was this error - 

Test Title: ── external error ─────────────────────────────────────────────────────────────────────────────────────────

Error coming from npm run dev

Command failed with exit code 1: npm run dev
╭─ error ──────────────────────────────────────────────────────────────────────╮
│ │
│ The directory /Users/app/web/frontend │
│ doesn't have a package.json. │
│ │
╰──────────────────────────────────────────────────────────────────────────────╯

dev
shopify app dev

[ShopifyDevSup]

Hi @logistiq-123 👋

For Shopify CLI issues, please submit an issue here in the public repo directly.