The loadingStop() method hides the loading label that was displayed using DayPilot.Scheduler.loadingStart().
DayPilot.Scheduler.loadingStop()This method has no parameters.
dp.loadingStart({ text: "Please wait..." });
// ...
dp.loadingStop();Loading Label [doc.daypilot.org]
DayPilot.Scheduler.blockOnCallBack
DayPilot.Scheduler.loadingLabelVisible