Unknown property 'spring.cloud.nacos.config.file-exetension'

[abelzhyb]

<java.version>17</java.version>
spring-boot-starter-parent
2.6.6
spring-cloud-alibaba-dependencies
2021.0.1.0

使用版本信息如上
配置文件application.yml，报错Unknown property 'spring.cloud.nacos.config.file-exetension'
spring:
application:
name: example
cloud:
nacos:
config:
server-addr: localhost:8848
file-exetension: properties