Fortunately it doesn’t even matter what you are doing. The answer is ALWAYS the same for NullReference.
How to fix a NullReferenceException error
https://forum.unity.com/threads/how-to-fix-a-nullreferenceexception-error.1230297/
Three steps to success:
- Identify what is null ← don’t move past this until you have got it right!
- Identify why it is null
- Fix that
For a future problem that actually needs a forum post, remember that photographs of code are not a thing. If you post a code snippet, ALWAYS USE CODE TAGS:
How to use code tags: Using code tags properly