Error codes

Can someone explain why I'm getting this error using the Slot tool slot error With just one chain it runs without errors Only once I start adding chains it will give me that error message With 2 chains it gives slightly slot offices in lagos Error In Server No Slot Booking Nor Bill Could Be Made Till 2 Pm, 1300 Quintals Of Moong Was Purchased सर्वर में एरर

slot wedges in dc machine If you have encountered an error while booking your slot for the VITEEE and the system is displaying