Unable to connect Puck.js - problem with noble after disconnect

Yes the OS ( raspbian Stretch ) is up to date, i use the noble module to scan the puck when the button is clicked , the code :

 // get the mac address of new puckJS - we use noble.js to scan BLE device whose peripheral name is Puck.js then get the mac address and store it

        function onDiscovery(peripheral) {
                if (peripheral.advertisement.localName == undefined || peripheral.address == 'unknown') {
                        return;
                }
                if (peripheral.advertisement.localName.incl­udes("Puck.js")) {
                        if (peripheral.address == puckJSdevice) {
                               
                                if (!peripheral.advertisement.manufacturerD­ata ||
                                        peripheral.advertisement.manufacturerDat­a[0] != 0x90 ||
                                        peripheral.advertisement.manufacturerDat­a[1] != 0x05) return;
                              
                                var data = peripheral.advertisement.manufacturerDat­a.slice(2);

                                //console.log(data);
                                if (lastAdvertising[peripheral.address] == undefined) {
                                        lastAdvertising[peripheral.address] = data.toString();
                                }
                                // check for changed services
                                if (lastAdvertising[peripheral.address] != data.toString()) {
                                        console.log(lastAdvertising[peripheral.a­ddress], data.toString());
                                        puckClicked.onDeviceChanged(peripheral.a­ddress, data);
                                } else {
                                        currentNumberClicked = data.readInt8(); justOnePass = 0;
                                }
                                lastAdvertising[peripheral.address] = data;
                        }
                        if (puckJSnoble) {
                                return;
                        }
                        puckJSnoble = peripheral;
                        if (puckJSdevice) {
                                return;
                        } else {
                                console.log("passage config puck");
                                puckJSdevice = peripheral.address;
                                //save the new PuckJS button mac address in the database in tv_config.puckjs
                                request(serverFamily + '/1.0/tvs/addPuckJSConfig/' + process.env._MAC + '?puckjs=' + puckJSdevice, function (error, res) {
                                        console.log(error || res.message, 'puck button saved');
                                });
 resetScriptPuck();

Then when the clicked button event is triggered i use this code to light the LED ( with espruino ) :

 // send command to puck - light the LED
exec('espruino -t -p ' + puckJSdevice + ' -e "LED2.set();"',function(error,stdout,std­err){
                                        console.log("ESPRUINO LIGHT THE LED error : ", error, "stdout : ", stdout, "stderr : ",stderr);
                                });

On node.js server start i reset and upload this code to puck :

var presses = 0;

setWatch(function() {                                                          
 if(presses > 100){presses=0} 
 presses++;
 LED2.reset();
 LED3.reset();
  NRF.setAdvertising({},{manufacturer: 0x0590, manufacturerData:[presses]});   
}, BTN, {edge:"rising", repeat:1, debounce:50})

Sometimes it cannot light the led and i have this message : unable to connect "MAC ADDRESS"
or it stop to emit DATA from BLE ( because it still connected to my raspberry controller after the LED is turned on ).
Would it be a solution to force remove the connected puck with "bluetoothctl" before sending the expression with espruino to avoid this? or just waiting a few seconds before trying to connect ?

Thanks !