Node-red-node-serialport : request maxListners

General
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I'm using node-red-node-serialport : serial request Node to connect to an external instrument , I'm using the Node multiple times with in a subflow and using the subflow many times in my flows , console log is throwing an error : 2 Feb 14:03:48 - [info] Starting flows
2 Feb 14:03:49 - [info] Started flows
(node:12928) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 data listeners added to [EventEmitter]. Use emitter.setMaxListeners() to increase limit
(Use node --trace-warnings ... to show where the warning was created)
(node:12928) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 timeout listeners added to [EventEmitter]. Use emitter.setMaxListeners() to increase limit
(node:12928) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 ready listeners added to [EventEmitter]. Use emitter.setMaxListeners() to increase limit
(node:12928) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 closed listeners added to [EventEmitter]. Use emitter.setMaxListeners() to increase limit

I undrestand that the error is related to serial request Node ,and does any one suggestion on how to fix it

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