No Feign Client for loadBalancing defined. Did you forget to include spring-cloud-starter-loadbalanc出現這個問題是沒有loadbalanc 但是nacos中ribbon會造成loadbalanc包失效
在common的pom加入

<!--        nacos-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
                </exclusion>
            </exclusions>
            <version>2.2.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-loadbalancer</artifactId>
            <version>2.2.2.RELEASE</version>
        </dependency>