admin-server 启动时报错

我把项目改成 gradle 后，admin-server 启动报错，是什么配置没有加载吗？

Caused by: java.lang.IllegalArgumentException: authenticationManager cannot be null
	at org.springframework.util.Assert.notNull(Assert.java:181) ~[spring-core-6.2.8.jar:6.2.8]
	at org.springframework.security.web.server.authentication.AuthenticationWebFilter.<init>(AuthenticationWebFilter.java:94) ~[spring-security-web-6.5.1.jar:6.5.1]
	at org.springframework.security.config.web.server.ServerHttpSecurity$FormLoginSpec.configure(ServerHttpSecurity.java:3014) ~[spring-security-config-6.5.1.jar:6.5.1]
	at org.springframework.security.config.web.server.ServerHttpSecurity.build(ServerHttpSecurity.java:1664) ~[spring-security-config-6.5.1.jar:6.5.1]
	at com.hwkis.berrymall.admin.config.SecurityConfiguration.securityWebFilterChain(SecurityConfiguration.java:92) ~[main/:na]
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) ~[na:na]
	at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[na:na]
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.lambda$instantiate$0(SimpleInstantiationStrategy.java:171) ~[spring-beans-6.2.8.jar:6.2.8]
	... 42 common frames omitted