Elon Musk failed to appear at a summons to meet on Monday with Paris prosecutors, where investigators are looking into allegations of misconduct related to the social media platform X, including the spread of child sexual abuse material and deepfake content. Musk and Linda Yaccarino — the former CEO of X — were summoned for “voluntary interviews,” while other employees of X were scheduled to be heard as witnesses throughout this week, according to the Paris prosecutor’s office.Musk was summoned after a search took place in February at the French premises of X as part of an investigation opened in...