Escape The Ghosts does not compile in C#
When I  was participating in the Contest: Weekly Contest 73 my code had this compilation error : 'Deserializer' does not contain a definition for 'toInt2dJagged
When I  was participating in the Contest: Weekly Contest 73 my code had this compilation error : '__Deserializer__' does not contain a definition for 'toInt2dJaggedArray'. I was using C# environment Then I changed the code to the reset code with a default return (true) as shown in the code below : ( There was the same compilation problem )  . I would appreciate if someone could explain what was wrong. Thanks a lot. 

public class Solution 
{
    public bool EscapeGhosts(int[][] ghosts, int[] target)
        {
           
            return true;
        }
}
[]