TypeError: Cannot read property 'L' of undefined

When i try load sample data provided then in cloudwatch logs i get this error

```

> 2019-02-26T04:39:34.746Z b57cd446-e3d7-47e9-95c7-3c2ff6bbbf16 Found Redshift Load Configuration for randy-lambda-loader/input
> 
> 15:39:34
> 2019-02-26T04:39:34.825Z b57cd446-e3d7-47e9-95c7-3c2ff6bbbf16 TypeError: Cannot read property 'L' of undefined at Object.exports.fixEncryptedItemEncoding (/var/task/upgrades.js:148:24) at /var/task/upgrades.js:238:11 at nextTask (/var/task/node_modules/async/dist/async.js:5324:14) at Object.waterfall (/var/task/node_modules/async/dist/async.js:5334:5) at Object.exports.upgradeA
> 2019-02-26T04:39:34.825Z b57cd446-e3d7-47e9-95c7-3c2ff6bbbf16 TypeError: Cannot read property 'L' of undefined
> at Object.exports.fixEncryptedItemEncoding (/var/task/upgrades.js:148:24)
> at /var/task/upgrades.js:238:11
> at nextTask (/var/task/node_modules/async/dist/async.js:5324:14)
> at Object.waterfall (/var/task/node_modules/async/dist/async.js:5334:5)
> at Object.exports.upgradeAll (/var/task/upgrades.js:242:8)
> at Object.exports.upgradeConfig (/var/task/index.js:180:21)
> at Object.exports.foundConfig (/var/task/index.js:202:17)
> at /var/task/index.js:1503:37
> at /var/task/index.js:162:13
> at /var/task/node_modules/async/dist/async.js:969:16