Why was West Ham goal disallowed vs. Arsenal? David Raya incident explained as VAR saves Gunners

A West Ham goal was disallowed against Arsenal in a Premier League match following a VAR review involving Arsenal goalkeeper David Raya. The decision proved significant in the context of the Premier League title race, as the overturned goal gave Arsenal a major boost. The incident was reviewed and explained in detail, with VAR ultimately ruling the goal out and saving Arsenal from conceding.