Printer not disconnected (random)

[cloudeweb]

Hello,
this is my code, but sometime my printer don't disconnect.
I added a setTimout for delay disconnect but problem is same.
someone have same my problem?

` BTPrinter.list(function (data) {
BTPrinter.connect(function(data){
BTPrinter.printBase64(function(data){
BTPrinter.printTextSizeAlign(function(data){
BTPrinter.printTextSizeAlign(function(data){
BTPrinter.printTextSizeAlign(function(data){

    },function(err){
      console.log(err);
    }, text,'2','0') //text

    },function(err){
      console.log(err);
    }, order_number,'15','1') //order number

    },function(err){
      console.log(err);
    }, description,'20','1') //description

    },function(err){
    console.log(err);
    }, logo, '1') //logo

    },function(err){
    console.log(err);
    }, printer); // printer connect

    },function(err){
    console.log(err); //printer list

});

     setInterval(function(){
        BTPrinter.disconnect(function(data){
          },function(err){
            console.log(err);
         }, printer);
     }, 3000);`

thanks!