Invalid update: invalid number of sections. The number of sections contained in the table view after

“Invalid update: invalid number of sections. The number of sections contained in the table view after the update (1) must be equal to the number of sections contained in the table view before the update (0), plus or minus the number of sections inserted or deleted (0 inserted, 0 deleted). Table view: <UITableView: 0x7ff64900a000; frame = (0 0; 390 844); clipsToBounds = YES; autoresize = W+H; gestureRecognizers = <NSArray: 0x600000a7f090>; layer = <CALayer: 0x60000047cea0>; contentOffset: {0, -143}; contentSize: {390, 0}; adjustedContentInset: {143, 0, 34, 0}; dataSource: <Todos.TodosVC: 0x7ff644706850>>”
Reasons for appearance ： After data changes tableView No updates
resolvent ：
Add after the modified data
tableView.reloadData()