Accidentily deleted my BP, after restoring showing error none trying to access value

I am a complete noob and this is my first project on the engine. Being loving the engine. But recently I mistakenly deleted a .WAV file which ended up deleting some of my assets including my main BP. I restored them and my main BP was showing corrupted so I redid the connections and now my previous tile object is throwing an error saying that non is trying to read its properties. If someone can help me with this problem it will be a huge help. If anyone wants I can post my whole project.

Any suggestions are welcome.

There should be an error message telling you which Variable/Node is trying to access none.

Just guessing, I assume it tries to access your .wav file you deleted, or that you renamed after importing, or moved to a different location.

yea that error is usually when the script is trying to read somethings value but there is no valid value.

It tells one object I made that none is trying to access its value… I tried everything but nothing seems to work. But it shows the error so there must be something that I must be doing wrong. I really need some advice here folks T_T