Construction of the Carolina Panthers’ state-of-the-art headquarters in Rock Hill, South Carolina, has been placed on pause, Tepper Sports & Entertainment said Monday. The first phase of the construction was slated to be completed in 2023, but the City of Rock Hill did not make its initial payment, which was due in March 2021, according to a source familiar with the situation. The company continued construction but never received the payment from the city. “We are committed to bettering the Carolinas community that supports our team and players,” Tepper Sports & Entertainment said in the state…