| Description | This article describes the steps to resolve issues with the Explorer tab in FortiSIEM. The Explorer tab may not function as expected due to a bottleneck in redis memory, and this article provides a solution to clear the Redis cache and restart the Supervisor and Workers. | 
| Scope | FortiSIEM v7.x+. | 
| Solution | Symptoms: 
 
 2025-09-30 09:28:30,189 [http-listener-2(21)] ERROR com.ph.phoenix.ws.rest.h5.H5RestResource - [PH_APPSERVER_REST_H5_ERROR]:[phCustId]=1,[eventSeverity]=PHL_ERROR,[phEventCategory]=3, [methodName]=doCMDBReportFieldValidation,[lineNumber]=41, [errReason]=Invalid CMDB report: invalid field activity_name,[phLogDetail]=HTML5 REST error - [PH_APPSERVER_REST_H5_ERROR]:[phCustId]=1,[eventSeverity]=PHL_ERROR,[phEventCategory]=3, [procName]=AppServer,[className]=com.ph.phoenix.service.util.ValidationHelper, [methodName]=doCMDBReportFieldValidation,[lineNumber]=41, [errReason]=Invalid CMDB report: invalid field incident_et,[phLogDetail]=HTML5 REST error 
 
 
 [2025-09-30T09:36:04.803+0800] [glassfish 5.1] [SEVERE] [] [com.ph.phoenix.framework.logging.PhLogger] [tid: _ThreadID=114 _ThreadName=http-listener-2(16)] [timeMillis: 1759196164803] [levelValue: 1000] [[ (ResourceMethodInvocationHandlerFactory.java:52) 
 To resolve the issue with the Explorer tab in FortiSIEM, follow these steps: 
 
 Note: Ensure to use the correct syntax when running the command to clear the Redis cache. The command should be run with ` instead of '. 
 For detailed guidance on content updates, refer to: | 
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