Isak non-penalty and Madueke-Mac Allister 'headbutt' show good and bad of VAR

Summary
There were two big flashpoints points during Arsenal's 1-0 win over Liverpool, demonstrating the good and bad sides of VAR.
Description from Skysports.
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Isak non-penalty and Madueke-Mac Allister 'headbutt' show good and bad of VAR
There were two big flashpoints points during Arsenal's 1-0 win over Liverpool, demonstrating the good and bad sides of VAR.
