How will I get this commandGAteway exception get solved?

Question

I am creating a delete command and am getting this error

org.axonframework.axonserver.connector.command.AxonServerRemoteCommandHandlingException: An exception was thrown by the remote message handling component: OUT_OF_RANGE: [AXONIQ-2000] Invalid sequence number 0 for aggregate "ef734cce-fb22-4bb1-a68a-8c8c6c7924e9", expected 1

The request am giving in postman is DELETE -> http://localhost:8081/products body has a String "ef734cce-fb22-4bb1-a68a-8c8c6c7924e9" and in my backend I have file Controller with :

@DeleteMapping()
public String deleteProduct(@RequestBody String productId1) {
    //create the command
    DeleteProductCommand deleteProductCommand = new DeleteProductCommand (productId1);
    String result = commandGateway.sendAndWait(deleteProductCommand);
    return result;
}


@Data
@Builder
public class DeleteProductCommand {

    @TargetAggregateIdentifier
    private String productId;
    
    public DeleteProductCommand(String productId) {
        this.productId = productId;
    }
}


@EventSourcingHandler
public void on(ProductDeletedEvent event) {
    this.productId = event.getProductId();
}

@EventHandler
public void on(ProductDeletedEvent event) {
    productRepository.deleteById(event.getProductId());
}

I was expecting it to delete the said product with the passed id.

But when I pass it directly, it gets deleted, I think the error is in somewhere like the event handler or something. At times am getting the product id as json