[BUG] WRANGLER_HYPERDRIVE_LOCAL_CONNECTION_STRING_HYPERDRIVE missing when populating R2 incremental cache

[tahmid-23]

Describe the bug

I'm using a hyperdrive binding in my project.
Currently, I have WRANGLER_HYPERDRIVE_LOCAL_CONNECTION_STRING_HYPERDRIVE set in my .env file, and not "localConnectionString". It works when I do pnpm dev.

It results in the following error:

Populating R2 incremental cache...
/home/user/project/node_modules/.pnpm/wrangler@4.18.0/node_modules/wrangler/wrangler-dist/cli.js:176390
      throw new UserError(
            ^

UserError: When developing locally, you should use a local Postgres connection string to emulate Hyperdrive functionality. Please setup Postgres locally and set the value of the 'WRANGLER_HYPERDRIVE_LOCAL_CONNECTION_STRING_HYPERDRIVE' variable or "HYPERDRIVE"'s "localConnectionString" to the Postgres connection string.

Steps to reproduce

Create a project using a Hyperdrive binding without localConnectionString set, and set up R2 incremental cache.

Expected behavior

It should deploy using the value from .env.

@opennextjs/cloudflare version

1.1.0

Wrangler version

4.18.0

next info output

Operating System:
  Platform: linux
  Arch: x64
  Version: #1 SMP PREEMPT_DYNAMIC Fri May  9 20:11:19 UTC 2025
  Available memory (MB): 15668
  Available CPU cores: 12
Binaries:
  Node: 22.14.0
  npm: 10.9.2
  Yarn: N/A
  pnpm: 10.9.0
Relevant Packages:
  next: 15.3.2 // There is a newer version (15.3.3) available, upgrade recommended! 
  eslint-config-next: 15.3.2
  react: 19.1.0
  react-dom: 19.1.0
  typescript: 5.8.3
Next.js Config:
  output: N/A
 ⚠ There is a newer version (15.3.3) available, upgrade recommended!

Additional context

No response

[vicb]

I'm using a hyperdrive binding in my project. Currently, I have WRANGLER_HYPERDRIVE_LOCAL_CONNECTION_STRING_HYPERDRIVE set in my .env file, and not "localConnectionString". It works when I do pnpm dev.

It results in the following error:

Could you clarify what works and what doesn't?

[tahmid-23]

Sorry,
localConnectionString is unset, WRANGLER_HYPERDRIVE_LOCAL_CONNECTION_STRING_HYPERDRIVE is set in .env.

Just normally running the application via pnpm dev is fine, it picks up the value of WRANGLER_HYPERDRIVE_LOCAL_CONNECTION_STRING_HYPERDRIVE.
When I actually deploy it to cloudflare (pnpm deploy based on the example in the documentation), during the step where it uploads to R2 cache, it throws that error.