cannot read property of length undefined

[pareddy113]

TypeError: Cannot read property 'length' of undefined at DynamoRestore._checkTableReady (/home/viv1sgp/Documents/dynamo-backup-restore/dynamo-restore/dynamo-backup-to-s3/lib/dynamo-restore.js:415:28) at Request.<anonymous> (/home/viv1sgp/Documents/dynamo-backup-restore/dynamo-restore/node_modules/aws-sdk/lib/request.js:364:18) at Request.callListeners (/home/viv1sgp/Documents/dynamo-backup-restore/dynamo-restore/node_modules/aws-sdk/lib/sequential_executor.js:105:20) at Request.emit (/home/viv1sgp/Documents/dynamo-backup-restore/dynamo-restore/node_modules/aws-sdk/lib/sequential_executor.js:77:10) at Request.emit (/home/viv1sgp/Documents/dynamo-backup-restore/dynamo-restore/node_modules/aws-sdk/lib/request.js:683:14) at Request.transition (/home/viv1sgp/Documents/dynamo-backup-restore/dynamo-restore/node_modules/aws-sdk/lib/request.js:22:10) at AcceptorStateMachine.runTo (/home/viv1sgp/Documents/dynamo-backup-restore/dynamo-restore/node_modules/aws-sdk/lib/state_machine.js:14:12) at /home/viv1sgp/Documents/dynamo-backup-restore/dynamo-restore/node_modules/aws-sdk/lib/state_machine.js:26:10 at Request.<anonymous> (/home/viv1sgp/Documents/dynamo-backup-restore/dynamo-restore/node_modules/aws-sdk/lib/request.js:38:9) at Request.<anonymous> (/home/viv1sgp/Documents/dynamo-backup-restore/dynamo-restore/node_modules/aws-sdk/lib/request.js:685:12) /home/viv1sgp/Documents/dynamo-backup-restore/dynamo-restore/node_modules/aws-sdk/lib/request.js:31 throw err;

When I run multiple nodejs processes to restore multiple tables at the same time, I get this error. I am not sure what is causing the problem. Any help or insight is appreciated.