Utility class : Create Error method is here to create the error log object record

Util.cls

public with sharing class Util {
    /**
     * @author          SFDC Lessons
     * @description     Method to create the error log record 
     * @param           List<Database.SaveResult> saveResults
     * @param           List<SObject> objectList
     * @param           String topic
     * @return          void
     */
    public static void createError(List<Database.SaveResult> saveResults, List<SObject> objectList, String topic){
        try{
            //error object list
            List<Error_Log__c> errorList = new List<Error_Log__c>();
            for( integer i=0; i < saveResults.size(); i++ ){
                if (saveResults.get(i).isSuccess()) {
                    //add the code here if you want to do something in success case
                }//error case
                else if(! saveResults.get(i).isSuccess()){
                    // Operation failed, so get all errors        
                    Database.Error dbError = saveResults.get(i).getErrors().get(0);

                    system.debug('Failed record id: '+ (String) objectList[i].get('Id'));
                    String recordId, recordName = '';
                    if(objectList.size()>0){
                        recordId = (String) objectList[i].get('Id');
                        recordName = (String) objectList[i].get('Name');
                    }

                    Error_Log__c err = new Error_Log__c();
                    err.Error_Message__c = dbError.getMessage();
                    err.Stack_Trace__c = String.valueOf(dbError.getStatusCode());
                    err.Record_ID__c = recordId;
                    err.Record_Name__c = recordName;
                    err.Topic__c = topic;
                    //add error in the list
                    errorList.add(err);
                }
            }
            if (errorList.size()>0) {
                insert errorList;
            }
        }catch(Exception e){
            System.debug('Exception has occured! ' + e.getMessage());
        }
    }
}