Estou recebendo o erro "value is required"

Estou recebendo esse erro quando vou fazer o deploy.

Meu código

package com.myorg;

import software.amazon.awscdk.CfnOutput;
import software.amazon.awscdk.SecretValue;
import software.amazon.awscdk.Stack;
import software.amazon.awscdk.StackProps;
import software.amazon.awscdk.services.ec2.*;
import software.amazon.awscdk.services.ec2.InstanceType;
import software.amazon.awscdk.services.rds.*;
import software.amazon.awscdk.services.ssm.CfnParameter;
import software.constructs.Construct;

import java.util.Collections;


public class AluraRdsStack extends Stack {
    public AluraRdsStack(final Construct scope, final String id, final Vpc vpc) {
        this(scope, id, null, vpc);
    }

    public AluraRdsStack(final Construct scope, final String id, final StackProps props, final Vpc vpc) {
        super(scope, id, props);


        CfnParameter senha = CfnParameter.Builder.create (this, "senha")
                .type("String")
                .description("Senha do database pedidos-ms")
                .build();



        ISecurityGroup iSecurityGroup = SecurityGroup.fromSecurityGroupId(this, id, vpc.getVpcDefaultSecurityGroup());
        iSecurityGroup.addIngressRule(Peer.anyIpv4(), Port.tcp(3306));

        DatabaseInstance database = DatabaseInstance.Builder
                .create(this,  "Rds-pedidos")
                .instanceIdentifier("alura-aws-pedido-db")
                .engine(DatabaseInstanceEngine.mysql(MySqlInstanceEngineProps.builder()
                        .version(MysqlEngineVersion.VER_8_0)
                        .build()))
                .vpc(vpc)
                .credentials(Credentials.fromUsername("admin",
                CredentialsFromUsernameOptions.builder()
                        .password(SecretValue.unsafePlainText(senha.getValue()))
                        .build()))
                .instanceType(InstanceType.of(InstanceClass.BURSTABLE2, InstanceSize.MICRO))
                .multiAz(false)
                .allocatedStorage(10)
                .securityGroups(Collections.singletonList(iSecurityGroup))
                .vpcSubnets(SubnetSelection.builder()
                        .subnets(vpc.getPrivateSubnets())
                        .build())
                .build();

        CfnOutput.Builder.create(this,"pedidos-db-endpoint")
                .exportName("pedidos-db-endpoint")
                .value(database.getDbInstanceEndpointAddress())
                .build();

        CfnOutput.Builder.create(this,"pedidos-db-senha")
                .exportName("pedidos-db-senha")
                .value(senha.getValue())
                .build();


    }
}

Infra App

package com.myorg;

import software.amazon.awscdk.App;
import software.amazon.awscdk.Environment;
import software.amazon.awscdk.StackProps;
import software.amazon.awscdk.services.ecs.Cluster;

import java.util.Arrays;

public class AluraAwsInfraApp {

    public static void main(final String[] args) {
        App app = new App();

        AluraVpcStack vpcStack = new AluraVpcStack(app, "Vpc");
        AluraClusterStack clusterStack = new AluraClusterStack(app, "Cluster", vpcStack.getVpc());
        clusterStack.addDependency(vpcStack);

        AluraRdsStack rdsStack = new AluraRdsStack(app, "Rds", vpcStack.getVpc());
        rdsStack.addDependency(vpcStack);




        AluraServiceStack serviceStack = new AluraServiceStack(app, "Service", clusterStack.getCluster());
        serviceStack.addDependency(clusterStack);
        app.synth();
    }
}