Issue description

Bug Description

Deploying a Fargate container service fails with internal Zod validation error.

Error

TypeError: Cannot read properties of undefined (reading '_zod')
    at Object.inst._zod.parse (/home/hello/.serverless/releases/4.31.1/engine/node_modules/zod/v4/core/schemas.js:1400:46)

Environment

• Serverless Framework: 4.31.1
• Node.js: 20.20.0
• OS: Ubuntu
• Config file: serverless.containers.yml

Config (minimal reproduction)

org: spacemonk
name: fargate
deployment:
  type: [email protected]

containers:
  service-sync:
    src: ./
    routing:
      pathPattern: /*
      pathHealthCheck: /_internal_health_check
    compute:
      type: awsFargateEcs
      awsFargateEcs:
        memory: 8192
        cpu: 1024
        scale:
          - type: desired
            desired: 2

Steps to Reproduce

1. Create serverless.containers.yml with Fargate config
2. Run serverless deploy --stage bbprod
3. Error occurs during packaging

Expected Behavior

Deployment should proceed without internal Zod parsing errors.

Workaround Attempted

• Cleared ~/.serverless cache
• Downgraded Node from v24 to v20
• Simplified config (removed variable interpolation)
• None resolved the issue

Context

No response