Internal Server Error when deploying Microsoft foundry sample 18

Hi Team...I am trying to deploy the infrastructure using the sample https://github.com/microsoft-foundry/foundry-samples/tree/main/infrastructure/infrastructure-setup-bicep/18-managed-virtual-network-preview. But I am seeing an internal server error. I have tried multiple times in East US 2 and Sweden Central regions.

{
"status": "Failed",
"error": {
"code": "ResourceDeploymentFailure",
"target": "/subscriptions/xxxxxxxxxxxxxxxxxx/resourceGroups/xxxxxxx/providers/Microsoft.Resources/deployments/ai-aiser14kmb-4kmb-deployment",
"message": "Encountered internal server error. Diagnostic information: timestamp '20260115T174029Z', subscription id 'xxxxxxxxxxxxxxxxx', tracking id '1cee74f0-cdb2-4435-aaff-5534f0a02ce7', request correlation id 'c5899b39-014d-4ee9-b1f4-d197dd3be82f'."
}
}