pairing failed: lib/hci-socket/crypto.js:60 TypeError: Cannot read property 'length' of undefined

[akvadrako]

I am trying to run the echo example with the latest version of bleno, but when I attempt to pair it crashes:

node echo/main.js
bleno - echo
on -> stateChange: poweredOn
on -> advertisingStart: success
(node:3716) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
/home/dev/ble-light-js/node_modules/bleno/lib/hci-socket/crypto.js:60
  var output = new Buffer(input.length);
                                ^

TypeError: Cannot read property 'length' of undefined
    at swap (/home/dev/ble-light-js/node_modules/bleno/lib/hci-socket/crypto.js:60:33)
    at e (/home/dev/ble-light-js/node_modules/bleno/lib/hci-socket/crypto.js:37:9)
    at Object.c1 (/home/dev/ble-light-js/node_modules/bleno/lib/hci-socket/crypto.js:22:9)
    at Smp.handlePairingRandom (/home/dev/ble-light-js/node_modules/bleno/lib/hci-socket/smp.js:130:12)
    at Smp.onAclStreamData (/home/dev/ble-light-js/node_modules/bleno/lib/hci-socket/smp.js:58:10)
    at AclStream.emit (events.js:327:22)
    at AclStream.push (/home/dev/ble-light-js/node_modules/bleno/lib/hci-socket/acl-stream.js:26:10)
    at BlenoBindings.onAclDataPkt (/home/dev/ble-light-js/node_modules/bleno/lib/hci-socket/bindings.js:194:21)
    at Hci.emit (events.js:315:20)
    at Hci.onSocketData (/home/dev/ble-light-js/node_modules/bleno/lib/hci-socket/hci.js:595:14)