Best friend ghosted me

Hi guys. I’m wondering if you could offer me some advice. My best friend of 5 years has randomly ghosted me. There was no warning, no argument. She has removed me from all social media and blocked me. I have no idea what I could have done wrong. I am a really chill laid back person, stay at home mom, I have no drama going on at all. Her life is similar and I’m not aware of anything going on with her. We’ve never had an argument or disagreement and even our kids are best friends. What should I do? I am like really really hurt by this.