Timber instead of Log??

In Background work with WorkManager - Kotlin, step 6 - Chain your work.
code for BlurWorker.kt

...
return try {
if (TextUtils.isEmpty(resourceUri)) {
Timber.e("Invalid input uri") <--- Should Timber not be Log?
throw IllegalArgumentException("Invalid input uri")
}
...

Open the “Background work with WorkManager - Kotlin” codelab at step 6, “Chain your work,” and inspect BlurWorker.kt around the “Invalid input uri” logging call. Determine whether the example should use Timber or Log, then verify the corrected sample builds and the codelab text matches the code.

Written by the indexing model from the issue text.