Baby poop! HELP!!!

Dani • Keira’s mama 👶🏻💕👨‍👩‍👧 3 in the family

I was changing my 6 month olds diaper and her poop had a white coating. Looked like spiderwebs or like power. She’s been having more solid stools now that she’s eating purées. She hasn’t been interested in her bottle the past couple of days. Has anyone had this poopy problem with their babies??? Any and all help would be appreciated!!!