Internal Server Error when deploying Standalone version

[MariaBTV]

Repeatedly getting an error message when trying to deploy the standalone version. Can be reproduced with GUI and Bicep.
Same error inside 2 parallel deployments: PrivateEndpointFormRecogDeployment and PrivateEndpointOpenAIDeployment.

{
"status": "Failed",
"error": {
"code": "InternalServerError",
"message": "Object reference not set to an instance of an object."
}
}