Problem with my mixer grinder

Hi ladies,

I am facing some issues with my mixer grinder. If I attach a empty jar (any one of three) then the blades rotate fine but if I put even 2-3 leaves (or even 1-2 grains of dal) in that, blades do not rotate.

I am confused what is the problem. If someone knows the quick fix for this, please let me know otherwise I would have to wait till weekend to get it fixed.

Thanks.

Problem with my mixer grinder