EXCLUSIVE: Since the Eras Tour began last year, many lucky fans who have attended the show haven’t been able to remember it days later. But experts have confirmed that this is completely normal, and concert amnesia is a real thing for Taylor Swift fans. It’s a night that nobody wants to forget. However, if you have been lucky enough to go to any night of Taylor Swift’s Eras Tour, then you may be struggling to remember certain parts of it. Many fans have taken to social media to express that when they look back on the night, a lot of it is a blur, with only key things standing out in their memo…