catch dropMembership error

[bwp91]

I was experiencing these errors:

(node:8214) UnhandledPromiseRejectionWarning: Error: dropMembership EADDRNOTAVAIL
    at Socket.dropMembership (dgram.js:835:11)
    at /usr/local/lib/node_modules/homebridge-ewelink/node_modules/node-dns-sd/lib/dns-sd.js:433:13
    at Array.forEach (<anonymous>:null:null)
    at DnsSd._dropMembership (/usr/local/lib/node_modules/homebridge-ewelink/node_modules/node-dns-sd/lib/dns-sd.js:432:28)
    at /usr/local/lib/node_modules/homebridge-ewelink/node_modules/node-dns-sd/lib/dns-sd.js:527:8
    at new Promise (<anonymous>:null:null)
    at DnsSd._stopListening (/usr/local/lib/node_modules/homebridge-ewelink/node_modules/node-dns-sd/lib/dns-sd.js:526:16)
    at /usr/local/lib/node_modules/homebridge-ewelink/node_modules/node-dns-sd/lib/dns-sd.js:467:9
    at processTicksAndRejections (internal/process/task_queues.js:97:5)

(node:8214) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 3)
(node:8214) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

[futomi]

Thank you so much.