Errors in scene file ?

Hi there,
I have two errors on my unity scene.
Both errors looks the same, here are the message :

Error message 1 :

Could not extract GUID in text file Assets/Scenes/Main.unity at line 2865.

Here is the 2865 line :

- {fileID: 2, guid: 00000000000000000000000000000000, type: 0}

Error message 2 :

Could not extract GUID in text file Assets/Scenes/Main.unity at line 2986.

Here is the 2986 line :

- {fileID: 2, guid: 00000000000000000000000000000000, type: 0}

So, looks the same ...

I tried to just remove these line (I had to try haha) and I have the message :

ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

Please Unity team, help me ! I spend to much time struggling with Unity bugs these days
Thanks for your help !

 

Ok, I had two nested game objects that had references to ScriptableObject that does no longer exists in the project.
The error message is not that clear.
Is there an easy way to track these kind of missing parts in a project ?
Thanks !