Hi @Shirisha,
I got the error. Now I have another issue is, I am trying to display the duplicate record names on a component based on the current record name. For that, I wrote the following code

public class LightningSchemaGlobalDescribe {
    
    @AuraEnabled
    public static list<sobject> fetchlables(String recordIdOrPrefix){
        List<String> objFields = new  List<String>();
        list<string> fields = new  list<string>();
        list<string>    fieldvalues = new list<string>();
        list<sobject> records;
        string recordsname;
        String objectName = '';
        list<Sobject> lists;
        list<sObject> listoffields;
        try{
            
            LightningSchemaGlobalDescribe.duplicateRecord(objFields,objectName,recordsname);
            String myIdPrefix = String.valueOf(recordIdOrPrefix).substring(0,3); 
            Map<String, Schema.SObjectType> gd =  Schema.getGlobalDescribe(); 
            
            for(Schema.SObjectType stype : gd.values()){
                
                
                Schema.DescribeSObjectResult r = stype.getDescribe();
                
                String prefix = r.getKeyPrefix();
                
                if(prefix!=null && prefix.equals(myIdPrefix)){
                    
                    objectName = r.getName();
                    
                    String getRecordNameQuery= 'Select Id,name from '+ objectName +' WHERE ' +' id = :recordIdOrPrefix ';
                    
                    lists= Database.query(getRecordNameQuery);
                    
                    //  system.debug(lists);
                    
                    
                    String sObjectName = objectName;
                    Schema.SObjectType t = Schema.getGlobalDescribe().get(sObjectName);
                    SObject s = t.newSObject();
                    // system.debug(s);
                    List<sObject> result= Database.query(getRecordNameQuery);
                    
                    // system.debug(result);
                    
                    
                    recordsname=string.valueof(lists[0].get('name'));
                    
                    if(objectName!=null){
                        Map<String, Schema.SObjectField> efields = Schema.getGlobalDescribe().get(objectName).getDescribe().fields.getMap();
                        
                        list<string> editableFields = new list<string> ();
                        
                        
                        for(schema.SObjectField editfieds :efields.values()){
                            
                            schema.DescribeFieldResult fieldResult = editfieds.getDescribe();
                            
                            
                            if(fieldResult.isUpdateable() ){
                                
                                editableFields.add(fieldResult.getName());
                                
                                objFields = new List<String>(editableFields);
                                
                                
                                
                                //system.debug('Fields:::'+objFields); 
                            }
                            
                        }
                        
                    }  
                    
                }
                
            }
            system.debug(listoffields.size());
        }
        
        
        catch(Exception e){
            //print the error message
            System.debug(e);
            System.debug('Exception e '+e.getLineNumber());
        }
        
        
        return lists;
        
    }
    
    @AuraEnabled
    public static list<sobject> duplicateRecord(  List<String> objFields,  String objectName, string recordsname ){
        String separator = ', ';
        list<sObject> listoffields;
        string fieldnamess = 'SELECT '+ String.join(objFields, separator) + 
            				 ' FROM '+ objectName + 
                             ' WHERE Name LIKE \'' + recordsname +  '%\'';	
        
        listoffields = Database.query(fieldnamess); 
        
        return listoffields;
    }
    
    
    
}

Using Application Events, I am trying to display the duplicate record names on a lightning component similar to the current record name.
Here is my component
 
When I click on the Merge duplicate button, it should redirect to the other component and display the duplicate record names like Chantal Smith.

This is my event: NavEvent

<aura:event type="APPLICATION" >

    <aura:attribute name="recordId" type="String"/>
</aura:event>

This is my Component1: NavigateCmp1 which should redirect to the other component:

<aura:component implements="lightning:isUrlAddressable,force:appHostable,flexipage:availableForAllPageTypes,flexipage:availableForRecordHome,force:hasRecordId,forceCommunity:availableForAllPageTypes,force:lightningQuickAction" access="global">
    <aura:attribute name ="recordId" type="String"/>
     <aura:registerEvent name="Navigator" type="c:NavEvent"/>
    
    <lightning:button label="Merge Duplicates" variant="brand" onclick="{!c.click}" aura:id="n1"/>
   
</aura:component>

Controller::

({
	click : function(component, event, helper) {
		helper.clicks(component, event, helper);
	}
})

Helper:

({
    clicks : function(component, event, helper) {
        
        
        var appEvent = $A.get("e.c:NavEvent"); 
        //Set event attribute value
        appEvent.setParams({
            "recordId" : component.get('v.recordId'),
        }); 
        appEvent.fire(); 
        
        
        var navigateEvent = $A.get("e.force:navigateToComponent");
        navigateEvent.setParams({
            componentDef: "c:NavigateCmp2",
            
        });
        navigateEvent.fire();
    }
})

Component 2: NavigateCmp2
 

<aura:component controller="LightningSchemaGlobalDescribe" implements="lightning:isUrlAddressable,force:appHostable,flexipage:availableForAllPageTypes,flexipage:availableForRecordHome,force:hasRecordId,forceCommunity:availableForAllPageTypes,force:lightningQuickAction" access="global" >
    
    <aura:attribute name="sobj" type="sObject[]"/>
    <aura:attribute name="data" type="String[]"/>
    <aura:attribute name="columns" type="List[]" />
    <aura:attribute name="ObjectName" type="sObject[]" />
    <aura:attribute name="DuplicateRecords" type="String[]"/>
    
    <lightning:navigation aura:id="navService"/>
    
  <aura:handler event="c:NavEvent" action="{!c.component2Event}"/>
    
  <aura:handler name="init" value="{! this }" action="{! c.duplicateRecords }"/>
    
    <div class="slds-box slds-theme_default">
        <lightning:layout horizontalAlign="space" verticalAlign="center" multipleRows="true">
            <aura:iteration items="{!v.sobj}" var="mapKey">
                <lightning:layoutItem flexibility="auto" size="12" smallDeviceSize="6" mediumDeviceSize="6" largeDeviceSize="6">
                    {!mapKey.Name} <br/>
                </lightning:layoutItem>
            </aura:iteration>
            <aura:iteration items="{!v.DuplicateRecords}" var="mapKey">
                <lightning:layoutItem flexibility="auto" size="12" smallDeviceSize="6" mediumDeviceSize="6" largeDeviceSize="6">
                    {!Name} <br/>
                </lightning:layoutItem>
            </aura:iteration>
        </lightning:layout>
    </div> 
    
</aura:component>

I really don't understand to write a method on the controller to display the duplicate record name. Here is the controller

The Component2Event is displaying the current record name based on the current record ID

({
   component2Event : function(component, event, helper){
        
       var evnt = event.getParam("recordId"); 
        console.log('evnt::' +evnt);
       component.set("v.recordId",evnt );
        
      var fields = component.get('v.sobj');
      var action=component.get("c.fetchlables");
        
        action.setParams({
            "recordIdOrPrefix":evnt
        });
        
        action.setCallback(this,function(response){
            var state=response.getState();
        
           if(state==='SUCCESS'){
                var result=response.getReturnValue();
                console.log('The Result-->' + result );
                console.log(JSON.stringify(result));
                component.set("v.recordId", response.getReturnValue());
              component.set('v.sobj',result);
                 console.log('Success:::',state);
            } else if(state==='ERROR'){
              
            } 
            
        });
        $A.enqueueAction(action);
    },
    
       
    
    
    })

My issue is with the duplicaterecords method. I could not able to figure out how to write the method to display the duplicate records. 

duplicateRecords: function(component, event, helper){
           var evnt = event.getParam("recordId"); 
        var objFields = component.get("v.objFields");
        var objectName = component.get("v.objectName");
        var recordsname = component.get("v.recordsname")
         
         var action=component.get("c.duplicateRecord");
          component.set("v.recordId",evnt );
       
        
         action.setParams({
            "objFields":objFields,
             "objectName":objectName,
             "recordsname": recordsname
        });
          action.setCallback(this,function(response){
            var state=response.getState();
          
            if(state==='SUCCESS'){
                  var result=response.getReturnValue();
                console.log('The Result-->' + result );
                console.log(JSON.stringify(result));
                component.set("v.recordId", response.getReturnValue());
              
                component.set('v.DuplicateRecords',result);
                
               
            } else if (response.state === "ERROR") {
             
                var errMsg = "";
        
                for (var i = 0; i < response.error.length; i++) { 
                   
                    errMsg += response.error[i].message + "\n"; 
                }  
            }
        });
        $A.enqueueAction(action);
    }

Please help me out in writing the method to display the duplicate records