following exception i have no idea what the problem is:
Error: callback called twice
at onCb (/Users/dev/Desktop/tmp/..../node_modules/pend/index.js:36:23)
at Response. (/Users/dev/...../node_modules/@auth0/s3/lib/index.js:308:11)
at Request. (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/request.js:369:18)
at Request.callListeners (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/sequential_executor.js:106:20)
at Request.emit (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/sequential_executor.js:78:10)
at Request.emit (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/request.js:688:14)
at Request.transition (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/request.js:22:10)
at AcceptorStateMachine.runTo (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/state_machine.js:14:12)
at /usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/state_machine.js:26:10
at Request. (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/request.js:38:9)
at Request. (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/request.js:690:12)
at Request.callListeners (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/sequential_executor.js:116:18)
at Request.emit (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/sequential_executor.js:78:10)
at Request.emit (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/request.js:688:14)
at Request.transition (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/request.js:22:10)
at AcceptorStateMachine.runTo (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/state_machine.js:14:12)
at /usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/state_machine.js:26:10
at Request. (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/request.js:38:9)
at Request. (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/request.js:690:12)
at Request.callListeners (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/sequential_executor.js:116:18)
at callNextListener (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/sequential_executor.js:96:12)
at Request.RESET_RETRY_STATE (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/event_listeners.js:510:9)
at Request.callListeners (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/sequential_executor.js:102:18)
at Request.emit (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/sequential_executor.js:78:10)
at Request.emit (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/request.js:688:14)
at Request.transition (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/request.js:22:10)
at AcceptorStateMachine.runTo (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/state_machine.js:14:12)
at /usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/state_machine.js:26:10
at Request. (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/request.js:38:9)
at Request. (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/request.js:690:12)
at Request.callListeners (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/sequential_executor.js:116:18)
at Request.emit (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/sequential_executor.js:78:10)
at Request.emit (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/request.js:688:14)
at Request.transition (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/request.js:22:10)
at AcceptorStateMachine.runTo (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/state_machine.js:14:12)
at /usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/state_machine.js:26:10
at Request. (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/request.js:38:9)
at Request. (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/request.js:690:12)
at Request.callListeners (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/sequential_executor.js:116:18)
at callNextListener (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/sequential_executor.js:96:12)
at IncomingMessage.onEnd (/usr/local/lib/node_modules/serverless/node_modules/aws-sdk/lib/event_listeners.js:336:13)
at IncomingMessage.emit (events.js:327:22)
at IncomingMessage.EventEmitter.emit (domain.js:467:12)
at endReadableNT (internal/streams/readable.js:1327:12)
at processTicksAndRejections (internal/process/task_queues.js:80:21)