What is the biggest challenge with VAR?

[Henrywrites]

There have been some refereeing decisions this season that didn't sit well with some top managers. From Liverpool vs. Spurs game to Newcastle United vs. Arsenal fc match. A lot of clubs are becoming dissatisfied with how the officiating has been. What do you think should be fixed?

 

[Webster]

Getting the nuances of the Laws of the Game right when making a decision.
For instance, the ball strikes a defender in the box; his arms are in a natural position but the ball deflects away off of them.

Is that a handball?
Prior to VAR, odds are the answer's no. Unfortunately, VAR can't get the nuances down and often rules too strictly.