Why were Barun and Shahana asked not to use social media on sets?

Why were Barun and Shahana asked not to use social media on sets? Okay, here's an interesting titbit for you. TV heartthrob Barun Sobti who is set with his Bollywood https://www.bollywoodbubble.com/bollywood-news/why-were-barun-and-shahana-asked-not-to-use-social-media-on-sets/