Binance: TypeError: Cannot read property 'isConnected' of undefined

[MidoMiddle]

(node:2725960) 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: 8) { mark: 'warning', warn: TypeError: Cannot read property 'isConnected' of undefined at BinanceClient._unsubscribe (/home/myserver/Storage/Servers/order-book-server/node_modules/ccxws/src/basic-client.js:168:21) at BinanceClient.unsubscribeLevel2Updates (/home/myserver/Storage/Servers/order-book-server/node_modules/ccxws/src/basic-client.js:111:10) at unsub (/home/myserver/Storage/Servers/order-book-server/OrderBook/ccxws.js:120:24) at BinanceClient.CCXWSErrHandler (/home/myserver/Storage/Servers/order-book-server/OrderBook/ccxws.js:157:9) at BinanceClient.emit (events.js:314:20) at BinanceClient._requestLevel2Snapshot (/home/myserver/Storage/Servers/order-book-server/node_modules/ccxws/src/exchanges/binance-base.js:421:12) at runMicrotasks (<anonymous>) at processTicksAndRejections (internal/process/task_queues.js:93:5) }

what I do wrong?

And this Error: 139653381592960:error:1408F119:SSL routines:ssl3_get_record:decryption failed or bad record mac:../deps/openssl/openssl/ssl/record/ssl3_record.c:677