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Magento showing error Order saving error: SQLSTATE[HY000]: General error: 1205 Lock wait timeout exceeded; try restarting transaction, on placing order at backend. Still Order has been saved with status "pending" and then if I generate invoice, this does not show MRP in invoice PDF.
So I need to cancel this order and have to reorder this, this time there no error appears.
I am not aware about this what is happening there and its cause.
can anyone help to to resolve this problem