And Resource handler returned message: "A MonitoringRoleARN value is required if you specify a MonitoringInterval value other than 0.
Also check DBClusterParameterGroupName
Also check Resource handler returned message: "The engine version that you requested for your DB instance (a.b) does not match the engine version of your DB cluster (c.d). (Service: Rds, Status Code: 400
AWS::RDS::DBCluster
Resource handler returned message: "Cannot find version 11.16 for aurora-postgresql (Service: Rds, Status Code: 400
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-rds-dbcluster.html#cfn-rds-dbcluster-engineversion
And
Resource handler returned message: "A MonitoringRoleARN value is required if you specify a MonitoringInterval value other than 0.
Also check
DBClusterParameterGroupName
Also check
Resource handler returned message: "The engine version that you requested for your DB instance (a.b) does not match the engine version of your DB cluster (c.d). (Service: Rds, Status Code: 400