Getting error in the editor MissingMethodException: Default constructor not found. what is that meaning? and how to resolve it?

I have this script :

using UnityEngine;

public class GapRangeAttribute : PropertyAttribute
{
    public float minRange;
    public float maxRange;
    public float sensitivity;

    public GapRangeAttribute(float minRange, float maxRange, float sensitivity)
    {
        this.minRange = minRange;
        this.maxRange = maxRange;
        this.sensitivity = sensitivity;
    }
}

and this

using UnityEditor;
using UnityEngine;

[CustomPropertyDrawer(typeof(GapRangeAttribute))]
public class GapRangeDrawer : PropertyDrawer
{
    float minRange;
    float maxRange;
    float sensitivity;

    public GapRangeDrawer(float minRange, float maxRange, float sensitivity)
    {
        this.minRange = minRange;
        this.maxRange = maxRange;
        this.sensitivity = sensitivity;
    }

    public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
    {
        if (property.propertyType == SerializedPropertyType.Float)
        {
            EditorGUI.BeginProperty(position, label, property);
            EditorGUI.Slider(position, property, minRange, maxRange, label);
            property.floatValue = RoundValue(property.floatValue);
            EditorGUI.EndProperty();
        }
        else
        {
            EditorGUI.LabelField(position, label.text, "Use [GapRangeDrawer] with float values only!");
        }
    }

    private float RoundValue(float value)
    {
        return Mathf.Round(value / sensitivity) * sensitivity;
    }
}

and using it in mono script:

using UnityEditor;
using UnityEngine;

public class CubeSpawner : MonoBehaviour
{
    public GameObject cubePrefab;
    public LayerMask terrainLayer;
    [GapRange(0, 100, 0.1f)]
    public float gap = 0f;

and using the gap variable in some places in the mono script.
i'm not getting any errors in the visual studio only in the editor.

MissingMethodException: Default constructor not found for type GapRangeDrawer

Unity wants to create an instance of GapRangeDrawer but does not know how to use your constructor, i.e., which values to pass as argument.

Add it a constructor with no parameters, i.e., a so called default constructor.

public GapRangeDrawer()
    : this(0, 100, 0.1f) // pass default values to the other constructor
{
}

You can still use the constructor with 3 parameters in your code.