Error with springCloudAzureDefaultCredential.

[acltsba1241]

I was developing a Web Application with Java v21 and Spring v3.4.4. I was using the Azure Postgres Database and Azure KeyVault to save the database secrets.

spring:
  application:
    name: kern
  cloud:
    azure:
      keyvault:
        secret:
          property-sources[0]:
            endpoint: https://<vault-name>.vault.azure.net/
  datasource:
    url: jdbc:postgresql:///<vault-name>.database.azure.com:5432/<db-name>
    username: ${db-username}
    password: ${db-password}
  jpa:
    properties:
      hibernate:
        dialect: org.hibernate.dialect.PostgreSQLDialect
        show_sql: true
        ddl-auto: update

starting ApplicationContext. To display the condition evaluation report re-run your application with 'debug' enabled.
2025-04-24T00:12:32.637-05:00 ERROR 83061 --- [kern] [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'springCloudAzureDefaultCredential' defined in class path resource [com/azure/spring/cloud/autoconfigure/implementation/context/AzureTokenCredentialAutoConfiguration.class]: Unsatisfied dependency expressed through method 'tokenCredential' parameter 0: Error creating bean with name 'azureCredentialBuilderFactory' defined in class path resource [com/azure/spring/cloud/autoconfigure/implementation/context/AzureTokenCredentialAutoConfiguration.class]: Unsatisfied dependency expressed through method 'azureCredentialBuilderFactory' parameter 1: Error creating bean with name 'springCloudAzureCredentialTaskExecutor' defined in class path resource [com/azure/spring/cloud/autoconfigure/implementation/context/AzureTokenCredentialAutoConfiguration.class]: Failed to instantiate [org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor]: Factory method 'credentialTaskExecutor' threw exception with message: org/springframework/boot/task/TaskExecutorBuilder
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:804) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:546) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1361) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1191) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:563) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:523) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:339) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:347) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:337) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.instantiateSingleton(DefaultListableBeanFactory.java:1155) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingleton(DefaultListableBeanFactory.java:1121) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:1056) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:987) ~[spring-context-6.2.5.jar:6.2.5]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:627) ~[spring-context-6.2.5.jar:6.2.5]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146) ~[spring-boot-3.4.4.jar:3.4.4]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:752) ~[spring-boot-3.4.4.jar:3.4.4]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:439) ~[spring-boot-3.4.4.jar:3.4.4]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:318) ~[spring-boot-3.4.4.jar:3.4.4]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1361) ~[spring-boot-3.4.4.jar:3.4.4]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1350) ~[spring-boot-3.4.4.jar:3.4.4]
	at com.accelotics.kern.KernApplication.main(KernApplication.java:10) ~[classes/:na]
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'azureCredentialBuilderFactory' defined in class path resource [com/azure/spring/cloud/autoconfigure/implementation/context/AzureTokenCredentialAutoConfiguration.class]: Unsatisfied dependency expressed through method 'azureCredentialBuilderFactory' parameter 1: Error creating bean with name 'springCloudAzureCredentialTaskExecutor' defined in class path resource [com/azure/spring/cloud/autoconfigure/implementation/context/AzureTokenCredentialAutoConfiguration.class]: Failed to instantiate [org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor]: Factory method 'credentialTaskExecutor' threw exception with message: org/springframework/boot/task/TaskExecutorBuilder
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:804) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:546) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1361) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1191) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:563) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:523) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:339) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:347) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:337) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:254) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1667) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1555) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:913) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791) ~[spring-beans-6.2.5.jar:6.2.5]
	... 21 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'springCloudAzureCredentialTaskExecutor' defined in class path resource [com/azure/spring/cloud/autoconfigure/implementation/context/AzureTokenCredentialAutoConfiguration.class]: Failed to instantiate [org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor]: Factory method 'credentialTaskExecutor' threw exception with message: org/springframework/boot/task/TaskExecutorBuilder
	at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:657) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:489) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1361) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1191) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:563) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:523) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:339) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:347) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:337) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1609) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1555) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:913) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791) ~[spring-beans-6.2.5.jar:6.2.5]
	... 35 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor]: Factory method 'credentialTaskExecutor' threw exception with message: org/springframework/boot/task/TaskExecutorBuilder
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.lambda$instantiate$0(SimpleInstantiationStrategy.java:199) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiateWithFactoryMethod(SimpleInstantiationStrategy.java:88) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:168) ~[spring-beans-6.2.5.jar:6.2.5]
	at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653) ~[spring-beans-6.2.5.jar:6.2.5]
	... 48 common frames omitted
Caused by: java.lang.NoClassDefFoundError: org/springframework/boot/task/TaskExecutorBuilder
	at com.azure.spring.cloud.autoconfigure.implementation.context.AzureTokenCredentialAutoConfiguration.credentialTaskExecutor(AzureTokenCredentialAutoConfiguration.java:221) ~[spring-cloud-azure-autoconfigure-5.17.1.jar:5.17.1]
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) ~[na:na]
	at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[na:na]
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.lambda$instantiate$0(SimpleInstantiationStrategy.java:171) ~[spring-beans-6.2.5.jar:6.2.5]
	... 51 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.springframework.boot.task.TaskExecutorBuilder
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641) ~[na:na]
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188) ~[na:na]
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526) ~[na:na]
	... 55 common frames omitted


Process finished with exit code 1