Persistent Internal Error (Code 13) when creating Serverless VPC Access Connector in europe-west1

Hello Google Cloud Community,
I am experiencing a consistent and recurring Internal Error (Code 13) when trying to create a Serverless VPC Access Connector in the europe-west1 region for my project,(PII removed by Staff). The goal is to connect a Cloud Run service to Memorystore Redis.
I have systematically ruled out all common configuration issues, confirming that the problem is likely on the GCP backend side.
Successful Troubleshooting Steps:

  1. Subnet Validated: Successfully created a necessary Subnet in europe-west1 (10.0.10.0/24).
  2. IP Range Confirmed Unique: Tested multiple safe and non-conflicting IP CIDR ranges for the connector (e.g., 172.16.1.0/28).
  3. Cleanup Performed: Manually deleted previous failed connector attempts before each new try.
  4. Permissions/Quotas: Verified that my user has sufficient permissions and quotas are not exceeded.
    Error Message Received:
    "code": 13, "message": "An internal error occurred: Failed to create a VPC Access connector. Please delete the connector manually."
    As I currently have Basic Support (billing-only), I cannot open a technical support case. I would greatly appreciate any insight or help from a Google Engineer or an experienced community member regarding what might cause this internal infrastructure failure specifically in this project/region combination.
    Thank you.