golang rpc error: code = Unimplemented desc = method CreateOrder not implemented

golang rpc error: code = Unimplemented desc = method CreateOrder not implemented
除了大家说的client端和server端的package 不一致导致 还有可能是这个原因。。。 错误例子
func CreateOrder(ctx context.Context, in *CreateOrderRequest) (*Response, error) {
.....
}

正确：
func (o *OrderService) CreateOrder(ctx context.Context, in *CreateOrderRequest) (*Response, error) {
.....
}

golang rpc error: code = Unimplemented desc = method CreateOrder not implemented最先出现在Python成神之路。