Why am I getting cs0120?

Questions & Answers
1

using UnityEngine;
using UnityEngine.Tilemaps;

public class LevelLoader : MonoBehaviour
{
    public Tilemap tilemap;
    public Tile[] tiles;

	public static void LoadLevel(string level)
    {
        Level levelData = JsonUtility.FromJson<Level>(level);
        if (levelData.tiles.Length != levelData.size.x * levelData.size.y) return;

        for (int i = 0; i < levelData.tiles.Length; i++)
        {
            int x = i % levelData.size.x;
            int y = (int)Mathf.Floor(i / levelData.size.x);
            
            tilemap.SetTile(new Vector3Int(x, y, 0), tiles[levelData.tiles*]);*

}
}
}

class Level
{
public Vector2Int size;
public int[] tiles;
}

2

Because LoadLevel is a static method, you cannot use instance variables ( tilemap and tiles) there.