Unity BurgZergArcade Tutorial 20 errors.

So I have been following BurgZergArcade's unity tutorials and i have been loving it but i am up to 20 and ever since i started 18-20(BaseCharacter.cs Tutorials) i have been getting errors in my BaseCharacter Script, There are like 5 main errors than they start to repeat. It seems it cant get access to my other classes. Here are some errors:

Assets/Scripts/Character Classes/BaseCharacter.cs(124,57): error CS1503: Argument #1' cannot convert object' expression to type ModifyingAttribute' Assets/Scripts/Character Classes/BaseCharacter.cs(124,57): error CS1502: The best overloaded method match for ModifiedStat.AddModifier(ModifyingAttribute)' has some invalid arguments

Assets/Scripts/Character Classes/BaseCharacter.cs(124,149): error CS1729: The type ModifyingAttribute' does not contain a constructor that takes 2' arguments

Assets/Scripts/Character Classes/BaseCharacter.cs(124,92): error CS1503: Argument #1' cannot convert object' expression to type int' Assets/Scripts/Character Classes/BaseCharacter.cs(124,92): error CS1502: The best overloaded method match for BaseCharacter.GetPrimaryAttribute(int)' has some invalid arguments

Assets/Scripts/Character Classes/BaseCharacter.cs(124,117): error CS0103: The name AttributeName' does not exist in the current context Assets/Scripts/Character Classes/BaseCharacter.cs(33,56): error CS1502: The best overloaded method match for System.Enum.GetValues(System.Type)' has some invalid arguments

-------------------------------Fin

And here is my code or script:

using UnityEngine; using System.Collections; using System; //added to acess enum class using System.Collections.Generic;

public class BaseCharacter : MonoBehaviour{ private string _name; private int _level; private uint _freeExp;

 private Attribute[] _primaryAttribute;
 private Vital[] _vital;
 private Skill[] _skill;
 
 public void Awake(){
     _name = string.Empty;
     _level = 0;
     _freeExp = 0;
     
     _primaryAttribute = new Attribute[Enum.GetValues(typeof(AttributeName)).Length];
     _vital = new Vital[Enum.GetValues(typeof(VitalName)).Length];
     _skill = new Skill[Enum.GetValues(typeof(SkillName)).Length];
     
     SetupPrimaryAttributes();
     SetupVitals();
     SetupSkills();
 }
 
 
 public string Name {
     get {return _name;}
     set {_name = value;}
 }
 public int Level {
     get {return _level;}
     set {_level = value;}
 }
 
 public uint FreeExp {
     get {return _freeExp;}
     set {_freeExp = value;}
 }
 
 public void AddExp(uint exp){
     _freeExp += exp;    
     CalculateLevel();
 }
 
 //take average of all players skills and assign that as player level
 public void CalculateLevel(){
     
 }
 
 private void SetupPrimaryAttributes(){
     for(int cnt = 0; cnt < _primaryAttribute.Length; cnt++){
         _primaryAttribute[cnt] = new Attribute();
     }    
 }
 
 private void SetupVitals(){
     for(int cnt = 0; cnt < _vital.Length; cnt++){
         _primaryAttribute[cnt] = new Attribute();
     }        
 }
 
 private void SetupSkills(){
     for(int cnt = 0; cnt <_skill.Length; cnt++){
         _primaryAttribute[cnt] = new Attribute();
     }    
 }    
 
 public Attribute GetPrimaryAttribute(int index){
     return  _primaryAttribute[index];
 }
 
 public Vital GetVital(int index){
     return  _vital[index];
 }
 
 public Skill GetSkill(int index){
     return  _skill[index];
 }
 
 private void SetupVitalModifiers(){
     //health
     GetVital((int)VitalName.Health).AddModifier(new ModifyingAttribute(GetPrimaryAttribute((int)AttributeName.Constitution), .5f));
     //energy
     GetVital((int)VitalName.Energy).AddModifier(new ModifyingAttribute(GetPrimaryAttribute((int)AttributeName.Constitution), 1));
     //mana
     GetVital((int)VitalName.Mana).AddModifier(new ModifyingAttribute(GetPrimaryAttribute((int)AttributeName.Willpower), 1));
 }
 
 private void SetupSkillModifiers(){
     //melee_offence
     GetSkill((int)SkillName.Melee_Offence).AddModifier(new ModifyingAttribute(GetPrimaryAttribute((int)AttributeName.Might), .33f));
     GetSkill((int)SkillName.Melee_Offence).AddModifier(new ModifyingAttribute(GetPrimaryAttribute((int)AttributeName.Nimbleness), .33f));
     //melee _defence
     GetSkill((int)SkillName.Melee_Defence).AddModifier(new ModifyingAttribute(GetPrimaryAttribute((int)AttributeName.Speed), .33f));
     GetSkill((int)SkillName.Melee_Defence).AddModifier(new ModifyingAttribute(GetPrimaryAttribute((int)AttributeName.Constitution), .33f));
     //magic offence
     GetSkill((int)SkillName.Magic_Offence).AddModifier(new ModifyingAttribute(GetPrimaryAttribute((int)AttributeName.Concentration), .33f));
     GetSkill((int)SkillName.Magic_Offence).AddModifier(new ModifyingAttribute(GetPrimaryAttribute((int)AttributeName.Willpower), .33f));    
     //magic defence
     GetSkill((int)SkillName.Magic_Defence).AddModifier(new ModifyingAttribute(GetPrimaryAttribute((int)AttributeName.Concentration), .33f));
     GetSkill((int)SkillName.Magic_Defence).AddModifier(new ModifyingAttribute(GetPrimaryAttribute((int)AttributeName.Willpower), .33f));
     //ranged offence
     GetSkill((int)SkillName.Ranged_Offence).AddModifier(new ModifyingAttribute(GetPrimaryAttribute((int)AttributeName.Concentration), .33f));
     GetSkill((int)SkillName.Ranged_Offence).AddModifier(new ModifyingAttribute(GetPrimaryAttribute((int)AttributeName.Speed), .33f));
     //ranged defence
     GetSkill((int)SkillName.Ranged_Defence).AddModifier(new ModifyingAttribute(GetPrimaryAttribute((int)AttributeName.Speed), .33f));
     GetSkill((int)SkillName.Ranged_Defence).AddModifier(new ModifyingAttribute(GetPrimaryAttribute((int)AttributeName.Nimbleness), .33f));
 
 
 }
 public void StatUpdate(){
     for(int cnt = 0; cnt < _vital.Length; cnt++)
         _vital[cnt].Update();
     for(int cnt = 0; cnt < _skill.Length; cnt++)
         _skill[cnt].Update();    
     
 }    

} ----------------------------fin

So if you could find my errors it would mean the world to me, this series means alot to me and it is very interesting and i would hate to get stuck here. Ask me any questions if you need more info.

Thank you so much.