Don’t know why, but suddenly my blocks are not breaking and I also did not open the block.cs. It’s showing another error
NullReferenceException means that a reference (“link”) to an instance is missing. Double click on the error message to see to which line in your code it is referring. If you exposed a field in the Inspector, make sure that it’s not empty.
IndexOutOfRangeException means that the code is trying to access a non-existent index in an array.