/*Stack Trace:

Class.DynamicDataCapture.setup: line 1350, column 1
Class.DynamicDataCapture.testNegativeTestCases: line 1423, column 1
*/

// Line 1350 is pointing to my "catch" statement below - end of list:
  
        lstobjDDC.add(objDDC83);
        try{
            Database.insert(lstobjDDC);
        }
        catch(DmlException e){
            system.debug('Exception: '+e.getMessage());
        }
    }

//Exception is pointing to the setup():
         
        public static testMethod void testPositiveTestCases(){
        
        setup();  // <----- Line 1365 (exception)
        Test.startTest();   
        List<AEXP_Dynamic_Data_Capture__c> lstDDC = new List<AEXP_Dynamic_Data_Capture__c>();
            lstDDC = [Select Id from AEXP_Dynamic_Data_Capture__c where Enrollment__c = 'a694B00000003wdQAA' ];
            system.assert(lstDDC.size() == 83);
            
        Test.stopTest();


Exception is pointing to setup()

	     static testMethod void testNegativeTestCases() {
        
       setup();  <---- Line 1423(exception)
        Test.startTest();   
        List<AEXP_Dynamic_Data_Capture__c> lstDDC1 = new List<AEXP_Dynamic_Data_Capture__c>();
            lstDDC1 = [Select Id from AEXP_Dynamic_Data_Capture__c where Enrollment__c = 'a694B00000003wdQAA' ];
            system.assert(lstDDC1.size() != 83);
            
        Test.stopTest();

Im extremely new to apex, so please let me know if my example is even legible, and if you need a more detailed question. Any insight would be of great help. Thanks in advance :)