今天启动nacos的时候突然报错，nacos启动界面报错信息如下：

 Error creating bean with name 'authFilterRegistration' defined in class path resource
 [com/alibaba/nacos/core/auth/AuthConfig.class]: 
 Bean instantiation via factory method failed; 
 nested exception is org.springframework.beans.BeanInstantiationException:
 Failed to instantiate [org.springframework.boot.web.servlet.FilterRegistrationBean]:
 Factory method 'authFilterRegistration' threw exception;
 nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException:
 Error creating bean with name 'authFilter':
 Unsatisfied dependency expressed through field 'authManager';
 nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: 
 Error creating bean with name 'nacosAuthManager':
 Unsatisfied dependency expressed through field 'authenticationManager';
 nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException:
 Error creating bean with name 'nacosAuthConfig': 
 Unsatisfied dependency expressed through field 'userDetailsService';
 nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException:
 Error creating bean with name 'nacosUserDetailsServiceImpl':
 Unsatisfied dependency expressed through field 'userPersistService'; 
 nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException:
 Error creating bean with name 'externalUserPersistServiceImpl': 
 Unsatisfied dependency expressed through field 'persistService'; 
 nested exception is org.springframework.beans.factory.BeanCreationException: 
 Error creating bean with name 'externalStoragePersistServiceImpl': 
 Invocation of init method failed; nested exception is java.lang.RuntimeException:
 java.lang.RuntimeException: [db-load-error]load jdbc.properties error

 idea后台打印错误信息：

[NACOS SocketTimeoutException httpGet] currentServerAddr:http://localhost:8848， err : connect timed out

原因分析：项目可能没有正确加载nacos相关文件

解决办法：删除现有nacos文件夹，重新解压或下载nacos压缩包，启动startup.cmd，问题解决

若还报错，可能是startup.cmd文件中set MODE = ""不恰当

set BASE_DIR="%BASE_DIR:~0,-5%"

set CUSTOM_SEARCH_LOCATIONS=file:%BASE_DIR%/conf/

set MODE="cluster"
set FUNCTION_MODE="all"
set SERVER=nacos-server
set MODE_INDEX=-1
set FUNCTION_MODE_INDEX=-1
set SERVER_INDEX=-1
set EMBEDDED_STORAGE_INDEX=-1
set EMBEDDED_STORAGE=""

解决办法：将set MODE="cluster"改为set MODE="standalone"即可。